This standard specifies the classification and codes of disciplines. This standard applies to national macroeconomic management and science and technology statistics. The classification object of this standard is disciplines, which is different from professions and industries, and cannot replace the classification of literature, information, books and various academic viewpoints. GB/T 13745-1992 Discipline Classification and Codes GB/T13745-1992 Standard Download Decompression Password: www.bzxz.net
This standard specifies the classification and codes of disciplines. This standard applies to national macroeconomic management and science and technology statistics. The classification object of this standard is disciplines, which is different from professions and industries, and cannot replace the classification of literature, information, books and various academic viewpoints.

National Standard of the People's Republic of China
Classification and code or disciplines
Classification and code or disciplines1 Subject content and scope of application
This standard specifies the classification and code of disciplines. This standard applies to national macro-management and science and technology statistics. GB/T 13745 --92
The classification object of this standard is discipline, which is different from profession and industry, and cannot replace literature, information, book classification and various academic viewpoints.
2 Terminology
2.1 Discipline
Discipline is a relatively independent knowledge system.
2.2 Discipline group
Discipline group is a group of disciplines with a common attribute. Each discipline group contains several branch disciplines. 3 Discipline classification principles
3.1 Scientific principle
According to the objective and essential attributes and main characteristics of the discipline research object and the relevant connections between them, different subordinate relationships and parallel orders are divided to form an orderly discipline classification system. 3.2 Principle of Practicality
Classification and coding of disciplines directly serve science and technology policies and development plans, as well as scientific research funds, scientific and technological talents, scientific research projects, and statistics and management of scientific and technological achievements.
3.3 Principle of Simplicity
The division and combination of discipline levels should be simple and clear. 3.4 Principle of Compatibility
Consider the inheritance of the traditional domestic classification system and the continuity of actual use, and pay attention to improving international comparability. 3.5 Principle of Extensibility
According to the highly dynamic characteristics of the modern science and technology system, room should be left for emerging disciplines in their infancy so that they can be expanded and continued under the condition of a relatively stable classification system. 3.6 Principle of Uniqueness
In the standard system, each discipline can only use one name and one code. 4 Basis for discipline classification
This standard is divided according to the research object, research characteristics, research methods, source of discipline, research purpose and objectives
Approved by the State Administration of Technical Supervision on November 1, 1992 and implemented on July 1, 1993
5 Original preparation
GB/T13745--92
5.1 The disciplines listed in this standard should have the conditions of the formation of their theoretical system and specialized methods: the emergence of relevant groups of scientists; the establishment of relevant research institutions, teaching units and academic groups and the launch of effective activities; the emergence of relevant monographs and publications. 5.2 This standard only classifies the first, second and third level disciplines. There are 58 first level disciplines in total. The order of categories is: A Natural Science, code 110-180; B Agricultural Science, code 210-240; C Medical Science, code 310-360; D Engineering and Technology Science, code 410-630; E Humanities and Social Sciences, code 710-910. The corresponding five categories are used for scientific and technological statistics and do not appear in the standard. 5.3 The order and level of disciplines in this standard have nothing to do with the importance of the disciplines. 5.4 This standard includes emerging disciplines in growth, while emerging disciplines in the bud are not included for the time being, which fully reflects the emerging disciplines in development and leaves room for the development of disciplines, making it an open system. 5.5 In this classification system, especially in the engineering and technology science classification system, the names of disciplines, professions, industries, and products are the same, but their meanings are different.
5.6 In principle, the names in the classification system are discipline names. Considering the needs of practical applications and discipline classification levels, a small number of "discipline group" names appear.
5.7 Depending on the situation, the first-level disciplines can use the five names of "××xue", "××Science", "××Science and Technology", "××Engineering", and "××Engineering Technology Science".
5.8 For disciplines that are cross-cutting or have dual attributes, they can be classified in two places and given a code in only one place. No code is given in the relevant position. In the description column, note "see ×××·××××(code)\ or "see ×××·××××(code)". 5.9 Branch disciplines under the first-level disciplines are divided according to the different characteristics that determine the position of the discipline. In principle, one characteristic is taken. Considering the characteristics of the discipline and the needs of use, some disciplines are divided using two or more characteristics. 5.10 The disciplines in this classification system follow the principles of from theory to application, from general to individual, from abstract to specific, from general to special, from simple to complex, from low-level to high-level, and from macro to micro. 5.11 The uneven distribution of discipline classification levels and numbers in the standard is determined by the objective reality of the uneven development of various disciplines. 5.12 The treatment methods of this standard for certain cross-disciplinary, comprehensive and special disciplines 5.12.1 "Information science" in the classification table refers to a small concept, excluding "computer science". The theoretical and technical part of "information science and system science" is similar to mathematics in nature and is arranged after mathematics. Considering its development prospects, it is set as a first-level discipline. "Information science" and "system science" are both based on "cybernetics", "systems theory" and "information theory". It is difficult to separate them, so they are temporarily listed in the same category. 5.12.2 The three first-level disciplines of "environmental science and technology", "safety science and technology" and "management" are comprehensive disciplines. This discipline is listed between natural science and social science.
5.12.3 According to the actual situation in my country, "psychology" is listed as a second-level discipline under "biology". "Geography" is listed as a second-level discipline under "earth science", and "human geography" is a special case of "earth science". 5.12.4 "Printing and copying technology" is included in the third-level discipline under "46055 Special Mechanical Engineering", which is a special case. 5.12.5 "Instrumentation and meter technology" is included in the "Mechanical Engineering" discipline. The general or natural science "Instrumentation and meter technology" disciplines are concentrated under "Instrumentation and meter technology", and the special ones are included in their related disciplines. 6 Coding method
6.1 This discipline classification is divided into three levels: first-level, second-level, and third-level disciplines, represented by Arabic numerals. -First-level disciplines are represented by three digits, and second-level and third-level disciplines are represented by two digits respectively, and the first-level and second-level disciplines are separated by a dot. The code structure is as follows: 550
GB/T13745-92
Third-level disciplines
Second-level disciplines
-level disciplines
6.2 Second- and third-level disciplines have "other disciplines", represented by the number "99". 6.3 All codes in the standard only indicate the level and position of the subject in this classification system and do not indicate other meanings. 7
Subject classification and code wife
110·11
110·14
110·1410
110-1420
110 *1430
110:1440
1101450
110·1460
110·1710
110·1720
110·1730
110·1740
110·1750
1 10 · 1770 | | 110·2140
History of Mathematics
Mathematical Logic and Foundations of Mathematics
Deductive Logic
Proof Theory
Recursion Theory
Model Theory
Axiomatic Set Theory
Mathematical Foundations
Mathematical Logic and Foundations of MathematicsOther Subjects
Elementary Number Theory
Analytic Number Theory
Algebraic Number Theory
Transcendental Number Theory
Diophantine Approximation
Geometry of Numbers
Probabilistic Number Theory
Computational Number Theory
Other Subjects of Number Theory
Algebra
Linear Algebra
Lie Algebra
Kac-Moody Algebra
Also called symbolic logic
Also called metamathematics
Including commutative ring and commutative algebra, associative ring and associative algebra, non-associative ring and non-associative algebra, etc. 551
110·2145
110:2150
110·2155
110·2160
1102165
110-2170
1102175
1102180
110· 2199
110·24
110·27
1102710
110·2715
110·2720
110·2725||tt ||110-2730
110 -2735
110·2740
110·2745
1102750
110 2755
1102799
110·3110
110 - 3115
110·3120
110·3125
110·3130
110·3135
1103140
110-3145||tt ||110·3155
110·3160
110·3199
110·34
110 3410
110·3420
110 ·3430
GB/T 13745-92
Pan-algebra theory
Category theory
Homological algebra
Algebraic K-theory
Differential algebra
Algebraic coding theory|| tt||Algebra other subjects
Algebraic geometry
Geometry
Foundations of geometry
Euclidean geometry
Non-Euclidean geometry|| tt||Spherical geometry
Vector and tensor analysis
Affine geometry
Projective geometry
Differential geometry
Fractional geometry
Computational geometry||tt| |Geometry Other Subjects
Topology
Point Set Topology
Algebraic Topology
Homotopy Theory
Low Dimensional Topology||tt| |Homology theory
Dimension theory
Topology on lattices
Fiber bundle theory
Geometric topology
Singularity theory
Differential calculus Topology
Other subjects of topology
Mathematical analysis
Differential calculus
Integral calculus
Series theory
Including Riemann geometry, etc.
110·3499
110·37| |tt||110·41
110·4110
110·4130
110·4140
110·4150
110·4160||tt ||1104170
110·44
110·4410
110·4420
110·4430
1104499
110·47| |tt||110·4710
110·4720
110-4730
110·4740
110·4799
1105110
110·5120
110·5130
110·5199
110·54| |tt||110.57
110·5710
110·5715
110·5720
1105725
110·5730
110·5735
110·5740
110·5745
110 -5750
110·5755
GB/T 13745--92
Subject Name
Mathematical AnalysisOther Subjects
Non-standard Analysis||tt| |Function theory
Function theory of real variables
Function theory of single and complex variables
Function theory of multiple complex variables
Function approximation
Harmonic analysis||tt ||Complex manifolds
Special function theory
Function theoryOther subjects
Ordinary differential equations
Definition Theory of property
Stability theory
Analytical theory
Other subjects of ordinary differential equations
Partial differential equations
Elliptic partial differential equations
Hyperbolic partial differential equations
Parabolic partial differential equations
Nonlinear partial differential equations
Partial differential equationsOther subjects
Dynamic systems
Differential dynamics system
topological dynamical system
Complex dynamical systems
Other subjects of dynamical systems
Integral equations
Functional analysis
Linear operator theory
Calculus of variations
Topology Linear space
Hilbert space
Function space
Banach space
Operator algebra
Measure and integral
Generalized Function Theory
Nonlinear Functional Analysis
110·5 799
110·61
1106120
110·6130
110*6140
110·6150
1106170
110·6180
110·6199bzxz.net
110·64
110·6410
110·6420
110- 6430
110·6440
110·6450
110-6460
110·6470
110 6480
1106499||tt| |110·6710
110 6715
110:6720
110-6725
1106730
1106735
1106740
1106750
110-6755| |tt||110+6760
110·6799
110●71
110-7110
110 :7120
110·7130
110·7140
GB/T13745--92
Subject Name
Functional AnalysisOther Subjects
Computational Mathematics
Interpolation and Approximation Theory
Numerical Solution of Ordinary Differential Equations
Numerical Solution of Partial Differential Equations
Numerical Solution of Integral Equations
Numerical Algebra
Discretization Methods for Continuous Problems
Random Numerical Experiments
Error Analysis
Computational MathematicsOther Subjects
Probability Theory
Geometric Probability
Probability Distribution
Limit Theory On
Random Process
Markov Process
Random Analysis
Applied Probability Theory
Other Subjects of Probability Theory
Mathematical Statistics
Sampling Theory
Hypothesis Testing
Nonparametric Statistics
Analysis of Variance
Correlation and Regression Analysis
Statistical Inference
Bayesian Statistics
Experimental Design
Multivariate Analysis
Statistical Decision Theory
Time Series Analysis
Other Subjects of Mathematical Statistics
Applied Statistical Mathematics
Statistical Quality Control
Reliability Mathematics| |tt||Insurance mathematics
Statistical simulation
Including normal process, stationary process, point process and other specific applications in related disciplines
Including sampling distribution, sampling survey, etc.
Including parameter estimation, etc.
1107199
110·74
1107410
110·7415
110·7420
110·7425
110·7430
1107435
1107440
1107445
110·7450
110 ·7455 | 0 84 | | tt | | 110 87 | | tt | | 120 10 | | tt | ·2030
1202040
120·2050
1202060
GB/T13745-—92
Subject Name
Applied Statistics MathematicsOther Subjects
Operations Research
Linear Programming
Nonlinear Programming
Dynamic Programming
Combinatorial Optimization
Parameter Programming
Integer Programming
Stochastic Programming
Queuing Theory
Game Theory
Inventory Theory
Decision Theory
Search Theory
Overall Planning
Optimization||t t||Operations ResearchOther Disciplines
Combinatorics
Discrete Mathematics
Fuzzy Mathematics
Applied Mathematics
Other Mathematics Disciplines
Information Science and System Science
Basic Disciplines of Information Science and System Science
Information Theory
Cybernetics
System Theory
Basic Disciplines of Information Science and System ScienceOther DisciplinesOperations Research
Systems
Differential Dynamic Systems
General Systems Theory
Dissipative Structure Theory
Synergetics
Mutation Theory
Supercycle Theory
Also Known as Game Theory
Specific application into relevant disciplines
See 110, 74
See 110·5110
1202099
120·30
1203010
120·3020
120·3030
120·3040
120 ·3099
120·40
120·50
120·5010
1205099
120·99
1301010
1301020
1301030||tt ||1301040
130-1050
1301060
130:1070
1301080
130·1099
130·15
130·1510
130·1515||tt| |130·1520
130·1525
1301530
130·1535
130·1540
130·1545
130·1550
130·1555
GB/T 13745-92
Subject Name
Systems Other Subjects
Control Theory
Large System Theory
System Identification
State Estimation
Robust Control
Control Theory Other Subjects
System Evaluation and Feasibility Analysis
System Engineering Methodology
System Modeling
Decision Analysis
Decision Support System
Management Information System
System Engineering Methodology Other Subjects
System Engineering
Information Science and Systems Science Other Subjects
Basic Mechanics
Theoretical Mechanics
Rational Mechanics
Nonlinear Mechanics
Continuum Mechanics
Tribology
Flexible Multibody Mechanics||tt| |Gyromechanics
Flight mechanics
Other subjects of basic mechanics
Solid mechanics
Elasticity
Plasticity
Viscoelasticity and viscoplasticity
Interface mechanics and surface mechanics
Damage mechanics
Fracture mechanics
Discrete body mechanics
Micromechanics
See 630·5035||t t||See 630·5040
See 630,5045
All disciplines System engineering into related disciplines
Including elastic-plastic mechanics
130-1560
130·1565
130·1570
1301575
1301599
130·20
130:2010
130·2020
130·2030
1302040
130·2050
130·2060
1302070
130·2099
130·25
130 2511
130·2514
130·2517
1302521
130·2524
130·2527
130·2531||tt ||1302534
1302537
130·2541
130·2544
130·2547
130·2551
13 02554
130·2561
1302564
130·2567
130·2571
130·2599
130·30||tt ||130·35
130·3510
Electromagnetic solid mechanics
Mechanics of materials
Structural mechanics
Computational solid mechanics
Experimental solid Mechanics
GB/T 13745-- 92
Other subjects of solid mechanics
Vibration and waves
Linear vibration dynamics
Nonlinear vibration dynamics
Vibration dynamics of elastic bodies
Random Vibration Mechanics
Vibration Control Theory
Waves in Solids
Fluid-Solid Coupled Vibration
Other Disciplines of Vibration and Waves
Fluid Mechanics||tt| |Theoretical Fluid Mechanics||tt| |Hydrodynamics
Aerodynamics
Aerodynamics
Mechanics of Suspension
Flow Theory
Viscous Fluid Mechanics
Multiphase fluid mechanics
Percolation mechanics
Physical-chemical fluid mechanics
Plasma dynamics
Electromagnetic fluid mechanics
Non-Newtonian fluid mechanics| |tt||Fluid machineryFluid mechanics
Rotation Transformation and Stratified Fluid Mechanics
Radiation Fluid Mechanics
Computational Fluid Dynamics
Experimental Fluid Mechanics
Environmental Fluid Mechanics
Other Subjects of Fluid Mechanics||tt ||Rheology
Explosion mechanics
Detonation and deflagration theory
See 430-1010
130:3530
130·3599||tt ||130· 40
130·4010
130：4020
130·4030
130·4040
1304050
1304060
130·4099
130·45
130·50
130·99
140·15
140 :1510
140·1520
1401530
140·1540
140·1550
140·20
140·2020|| tt||140·2030
140·2050
140·2060
140·2099
140·25
140*2510||tt| |140·2520
140·2530
110·2599
GB/T 13745--92
Subject name
Explosion wave, shock wave, stress wave
High-speed collision dynamics
Explosion mechanicsOther subjects
Physical mechanics|| tt||High-pressure solid physics and mechanics
Dense fluid physics and mechanics
High-temperature gas physics and mechanics
Multiphase medium physics and mechanics
Critical phenomena and phase transitions
Atomic and molecular dynamics
Other subjects of physical mechanics
Statistical mechanics
Applied mechanics
Other subjects of mechanics
Physics
Physics History
Theoretical Physics
Mathematical physics
Electromagnetic field theory
Classical field theory
Relativity and gravitational field
Quantum mechanics
Statistical physics||tt| |Other Subjects of Theoretical Physics
Physical Acoustics
Nonlinear Acoustics
Quantum Acoustics
Ultrasonics
Hydroacoustics
Applied Acoustics| |tt||Other subjects of acoustics
Thermodynamics
Thermophysical properties
Heat transfer
Other subjects of thermal science
Specific application to related subjects||tt ||Specific application to relevant disciplines
140:3010
140 ?3015
140·3020
140·3025
140·3030
140·3035
140·3040| |tt||1403045
140：3050
140·3055
14 0·3060
140·3099
140·35
1403510
140·3520
140·3530
140:3540| |tt||140·3599
140·40
140·40 10
140·4020
140·4030
140·4040
140-4099
140·45
1404510||tt ||1404530
140·4599
140·50
140·5010
140·5015
140·5020
1405025| |tt||140·5030
140·5035
140·5040
Geometrical Optics
Physical Optics
GB/T 13745—92
Nonlinear optics
Spectroscopy
Quantum optics
Information optics
Guided wave optics
Luminescence||tt ||Infrared physics
Laser physics
Applied optics
Other optical disciplines
Electromagnetism
Electrostatics
Magnetostatics|| tt||Electrodynamics
Other subjects of electromagnetism
Radio physics
Electromagnetic wave physics
Quantum radio physics
Microwave physics
Ultrasonic High Frequency Radio Physics
Statistical Wireless Electrophysics
Radio physicsOther subjects
Electronic physics
Quantum electronics
Electronic ion and vacuum physics
Charged particle optics
Other subjects of electronic physics
Condensed matter physics
Condensed matter theory
Metal physics
Semiconductor physics
Dielectric physics||tt| |Crystallography
Amorphous physics
Liquid crystal physics
Specific applications and related disciplines
See 140·5065
Including crystal growth, crystal Chemistry, etc.
140 -5045
140+5050
140·5055
140·5060
140·5065
140·5070
1405080|| tt||140·5099
140·55
140·5510||tt ||140·5520
140·5530
1405540
140-5550
140·5599
140·60
140· 6010
140-6020
140·6030
140-604 0
1406050
140·6099
140·65
140·6510
140·6515
140-6520||tt ||140·6525
1106530
140·6535
140 ·6540
140-6545
140·6550
140-6599
140·70
140·7010
140·7020
140·7030
Thin-film physics
Low-dimensional physics
GB/T 13745 -92
Name
Surface and interface physics
Solid luminescence
Superconducting physics
Low temperature physics
High pressure Physics
Tribology
Other subjects of condensed matter physics
Plasma physics
Thermonuclear fusion plasma physics
Low-temperature plasma physics
Plasma spectroscopy
Condensed plasma physics
Non-neutral plasma physics
Other plasma physics disciplines
Atomic Molecular physics
Atomic and molecular theory
Atomic spectroscopy||tt ||Molecular spectroscopy
Spectroscopy
Atomic and molecular collision processes
Other disciplines of atomic and molecular physics
Nuclear physics
Nuclear structure|| tt||Nuclear spectroscopy
Low-energy nuclear reactions
Neutron physics
Fission physics
Fusion physics
Light-particle nuclear physics|| tt||Heavy ion nuclear physics
Medium and high energy nuclear physics
Other subjects of nuclear physics
High energy physics
Elementary particle physics
Cosmic ray physics
Particle accelerator physics
See 130·1050
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