| 01. Communication, education, history, and philosophy |
| 02. Mathematical methods in physics |
| 03. Quantum mechanics, field theories, and special relativity |
| 04. General relativity and gravitation |
| 05. Statistical physics, thermodynamics, and nonlinear dynamical systems |
| 06. Metrology, measurements, and laboratory procedures |
| 07. Сommon instruments, apparatus, and components |
| 10. THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
| 11. General theory of fields and particles |
| 12. Specific theories and interaction models; particle systematics |
| 13. Specific reactions and phenomenology |
| 14. Properties of specific particles |
| 20. NUCLEAR PHYSICS |
| 21. Nuclear structure |
| 23. Radioactive decay and in-beam spectroscopy |
| 24. Nuclear reactions: general |
| 25. Nuclear reactions: specific reactions |
| 26. Nuclear astrophysics |
| 27. Properties of specific nuclei |
| 28. Nuclear engineering and nuclear power studies |
| 29. Experimental methods and instrumentation for elementary-particle and nuclear physics |
| 30. ATOMIC AND MOLECULAR PHYSICS |
| 31. Electronic structure of atoms and molecules: theory |
| 32. Atomic properties and interactions with photons |
| 33. Molecular properties and interactions with photons |
| 34. Atomic and molecular collision processes and interactions |
| 36. Exotic atoms and molecules; macromolecules; clusters |
| 39. Instrumentation and techniques for atomic and molecular physics |
| 40. ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
| 41. Electromagnetism; electron and ion optics |
| 42. Optics |
| 43. Acoustics |
| 44. Heat transfer |
| 45. Classical mechanics of discrete systems |
| 46. Continuum mechanics of solids |
| 47. Fluid dynamics |
| 50. PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
| 51. Physics of gases |
| 52. Physics of space plasmas |
| 53. Physics of high temperature plasmas |
| 54. Physics of low temperaturee plasmas and gas discharges |
| 60. CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
| 61. Structure of solids and liquids |
| 62. Mechanical and acoustical properties of condensed matter |
| 63. Lattice dynamics |
| 64. Equations of state, phase equilibria, and phase transitions |
| 65. Thermal properties of condensed matter |
| 66. Transport properties of condensed matter (nonelectronic) |
| 67. Quantum fluids and solids; liquid and solid helium |
| 684. Polymers |
| 683. Colloids |
| 682. Thin films and low dimensional systems |
| 681. Interfacial phenomena |
| 70. CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
| 71. Electronic structure of bulk materials |
| 72. Electronic transport in condensed matter |
| 73. Electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures |
| 74. Superconductivity |
| 75. Magnetic properties and materials |
| 76. Magnetic resonances and relaxations in condensed matter, Mossbauer effect |
| 71. Dielectrics, piezoelectrics, and ferroelectrics and their properties |
| 78. Optical properties, condensed-matter spectroscopy and other interactions of radiation and particles with condensed matter |
| 79. Electron and ion emission by liquids and solids; impact phenomena |
| 80. INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
| 81. Materials science |
| 82. Physical chemistry and chemical physics |
| 83. Rheology |
| 84. Electronics; radiowave and microwave technology; direct energy conversion and storage |
| 85. Electronic and magnetic devices; microelectronics |
| 87. Biophysics |
| 88. Medical physics |
| 89. Other areas of applied and interdisciplinary physics |
| 90. GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
| 91. Solid Earth physics |
| 92. Hydrospheric and atmospheric geophysics |
| 93. Geophysical observations, instrumentation, and techniques |
| 94. Physics of the ionosphere and magnetosphere |
| 95. Fundamental astronomy and astrophysics; instrumentation, techniques, and astronomical observations |
| 96. Solar system; planetology |
| 97. Stars |
| 98. Stellar systems; interstellar medium; galactic and extragalactic objects and systems; the Universe |
| |
| 101. Mathematical logic and foundations |
| 102. Combinatorics and discrete mathematics |
| 103. Number theory |
| 104. Field theory and polynomials |
| 105. Algebraic systems |
| 106. Linear algebra |
| 107. Commutative algebra |
| 108. Algebraic geometry |
| 109. Noncommutative algebra, groups, rings, algebras |
| 110. Category theory, homological algebra, $K$-theory |
| 111. Topological groups, Lie groups and algebras |
| 112. Real functions, measure and integration |
| 113. Functions of a complex variable |
| 114. Several complex variables and analytic spaces |
| 115. Ordinary differential equations |
| 116. Partial differential equations |
| 117. Dynamical systems and ergodic theory |
| 118. Difference and functional equations, sequences, series, summability |
| 119. Fourier and harmonic analysis, integral transforms, operational calculus, integral equations |
| 120. Functional analysis and operator theory |
| 121. Calculus of variations and optimal control; optimization |
| 122. Geometry, differential geometry |
| 123. Topology |
| 124. Global analysis, analysis on manifolds |
| 125. Probability theory and stochastic processes |
| 126. Statistics |
| 127. Computer science |
| 128. Information and communication, circuits, codes, cryptology |
| 129. Applied mathematics, operations research, mathematical programming, |
