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Research facility · Sofia · Bulgaria

Institute of Mathematics and Informatics

In research, Institute of Mathematics and Informatics stands highest in Physical Sciences (#4,726 of 12,888 worldwide), Mathematics (#561 of 1,053 worldwide) and Computer Science (#2,510 of 4,667 worldwide), 2022–2025. Relative to its size it is most specialised in Mathematical Physics, Geometry and Topology and Mathematics — Mathematical Physics is 35.5× its share of world research.

math.bas.bgROR OpenAlex
World rank, 2022–2025
#8,327
of 28,054 · #8,737 all time
Rank in Bulgaria
#10
of 92
Research works
2.9k
▲ 37% vs 2013–17
Citations
24k
8.2 per fractional work
Top-10% rate
10.6%
record average 16.5%
Open access
46%
world 28%

What is Institute of Mathematics and Informatics known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #4,726 of 12,888 9.7%356 #5120
MathematicsField #561 of 1,053 10.9%136 #688
Computer ScienceField #2,510 of 4,667 7.9%114 #2531
Social SciencesDomain #6,242 of 10,521 15.2%83 #9396

Each strip is that field’s whole ranked pool, with the notch where Institute of Mathematics and Informatics sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#5,120 #4,726
  2. Mathematics#688 #561
  3. Computer Science#2,531 #2,510
  4. Social Sciences#9,396 #6,242
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does Institute of Mathematics and Informatics specialise in?

Where its research is concentrated relative to its size: Mathematical Physics takes 35.5× the share of its output that it takes of world research.

  1. Mathematical PhysicsSubfield · 26.6 works36×
  2. Geometry and TopologySubfield · 25.5 works33×
  3. MathematicsField · 136.1 works24×
  4. Applied MathematicsSubfield · 30.6 works23×
  5. Computational Theory and MathematicsSubfield · 29.7 works15×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.24× its world share, 5 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.34× its world share, 9 worksBiochemistry, Geneti…Immunology and Microbiology: 0.11× its world share, 0 worksImmunology and Micro…Neuroscience: 0.42× its world share, 3 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.06× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.45× its world share, 1 worksChemical EngineeringChemistry: 0.08× its world share, 1 worksChemistryComputer Science: 3.10× its world share, 114 worksComputer ScienceEarth and Planetary Sciences: 1.22× its world share, 9 worksEarth and Planetary …Energy: 0.17× its world share, 1 worksEnergyEngineering: 0.71× its world share, 51 worksEngineeringEnvironmental Science: 0.32× its world share, 8 worksEnvironmental ScienceMaterials Science: 0.27× its world share, 4 worksMaterials ScienceMathematics: 24.49× its world share, 136 worksMathematicsPhysics and Astronomy: 3.11× its world share, 33 worksPhysics and AstronomyDentistry: 0.08× its world share, 0 worksDentistryHealth Professions: 0.25× its world share, 3 worksHealth ProfessionsMedicine: 0.13× its world share, 12 worksMedicineNursing: 0.02× its world share, 0 worksNursingArts and Humanities: 0.84× its world share, 12 worksArts and HumanitiesBusiness, Management and Accounting: 0.40× its world share, 6 worksBusiness, Management…Decision Sciences: 3.49× its world share, 16 worksDecision SciencesEconomics, Econometrics and Finance: 1.65× its world share, 17 worksEconomics, Econometr…Psychology: 0.50× its world share, 7 worksPsychologySocial Sciences: 0.43× its world share, 26 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Mathematics, 24.5×. Every wedge is a field page.

Who are the top researchers at Institute of Mathematics and Informatics?

Ranked on the composite score, Донатас Сургайлис, Николай Николов and Stepan Tersian lead among researchers whose main affiliation is Institute of Mathematics and Informatics.

  1. 1 Донатас Сургайлис Bulgaria · #171,922 worldwide 150 citations · 31 works
  2. 2 Николай Николов Bulgaria · #664,350 worldwide 35 citations · 36 works
  3. 3 Stepan Tersian Bulgaria · #1,031,857 worldwide 43 citations · 22 works
  4. 4 M. S. Kaschiev Bulgaria · #1,053,548 worldwide 30 citations · 16 works
  5. 5 Tsviatko Rangelov Bulgaria · #1,227,579 worldwide 44 citations · 38 works
  6. 6 Galina Bogdanova Bulgaria · #1,252,613 worldwide 14 citations · 16 works
  7. 7 Mikhail Krastanov Bulgaria · #1,281,204 worldwide 28 citations · 26 works
  8. 8 Iliya Bouyukliev Bulgaria · #1,424,625 worldwide 21 citations · 15 works
  9. 9 Roumen Nikolov Bulgaria · #1,502,208 worldwide 11 citations · 25 works
  10. 10 N. I. Muskhelishvili Bulgaria · #1,565,408 worldwide 0 citations · 22 works
All ranked researchers at Institute of Mathematics and Informatics

Which keywords describe research at Institute of Mathematics and Informatics?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Nonlinear Equations, Monte Carlo Simulation, Nonlinear Schrödinger Equation, Deep Learning, Weighted Spaces, Numerical Integration, Cohomology and Boundary Value Problems.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Deep Learning23▲ 1.43×55 topics
  2. Machine Learning20▲ 1.27×56 topics
  3. Nonlinear Equations16▲ 27×6 topics
  4. Monte Carlo Simulation13▲ 14×4 topics
  5. Neural Networks12▲ 1.66×24 topics
  6. Nonlinear Schrödinger Equation10▲ 36×2 topics
  7. Weighted Spaces9▲ 83×2 topics
  8. Cohomology8▲ 41×2 topics
  9. Numerical Integration8▲ 62×2 topics
  10. Boundary Value Problems7▲ 31×3 topics
  11. Solitons7▲ 35×2 topics
  12. Numerical Methods7▲ 18×5 topics
  13. Fuzzy Logic7▲ 6.0×5 topics
  14. Cryptography7▲ 12×4 topics
  15. Model Checking7▲ 33×3 topics
  16. Hypergeometric Functions7▲ 64×2 topics
  17. Armendariz Rings6▲ 116×1 topic
  18. Random Matrix Theory6▲ 45×3 topics
  19. Sensitivity Analysis6▲ 14×5 topics
  20. Stochastic Differential Equations6▲ 21×2 topics
  21. Zero-Divisor Graphs6▲ 116×1 topic
  22. Deformations6▲ 53×1 topic
  23. Error-Correcting Codes6▲ 40×2 topics
  24. High-dimensional Integration6▲ 206×1 topic
  25. Hom-Lie Algebras6▲ 53×1 topic
  26. Quasi-Monte Carlo6▲ 206×1 topic
  27. Error Correction6▲ 48×2 topics
  28. Option Pricing6▲ 55×1 topic
  29. Stochastic Calculus6▲ 55×1 topic
  30. Algebraic Attacks6▲ 58×1 topic
  31. Reed-Solomon Codes6▲ 58×1 topic
  32. Representation Theory6▲ 40×2 topics
  33. Dynamical Systems6▲ 19×4 topics
  34. Iterative Methods6▲ 32×2 topics
  35. Inverse Problems6▲ 11×4 topics
  36. Parallel Computing6▲ 10×5 topics
  37. Fiber Bragg Grating6▲ 64×1 topic
  38. Finite Element6▲ 26×2 topics
  39. Spectral Amplitude Coding6▲ 64×1 topic
  40. Uncertainty Quantification5▲ 14×2 topics

Which research topics does Institute of Mathematics and Informatics publish most on?

By volume in 2022–2025: Rings, Modules, and Algebras, Advanced Topics in Algebra, Mathematical Approximation and Integration and Stochastic processes and financial applications.

Rings, Modules, and Alge…6Rings, Modules, and Algebras: 6 fractional worksAdvanced Topics in Algebra6Advanced Topics in Algebra: 6 fractional worksMathematical Approximation and Integration: 6 fractional worksStochastic processes and…6Stochastic processes and financial applications: 6 fractional worksCoding theory and crypto…6Coding theory and cryptography: 6 fractional worksgraph theory and CDMA systems: 6 fractional worksProbabilistic and Robust Engineering Design: 5 fractional worksGeometric Analysis and C…5Geometric Analysis and Curvature Flows: 5 fractional worksAdvanced Mathematical Physics Problems: 5 fractional worksAlgebraic structures and combinatorial models: 5 fractional works
Algebra and Number TheoryNumerical AnalysisFinanceArtificial Intelligence5 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Rings, Modules, and Algebras Algebra and Number Theory 6 works
  2. 2 Advanced Topics in Algebra Algebra and Number Theory 6 works
  3. 3 Mathematical Approximation and Integration Numerical Analysis 6 works
  4. 4 Stochastic processes and financial applications Finance 6 works
  5. 5 Coding theory and cryptography Artificial Intelligence 6 works
  6. 6 graph theory and CDMA systems Electrical and Electronic Engineering 6 works
  7. 7 Probabilistic and Robust Engineering Design Statistics, Probability and Uncertainty 5 works
  8. 8 Geometric Analysis and Curvature Flows Applied Mathematics 5 works
  9. 9 Advanced Mathematical Physics Problems Mathematical Physics 5 works
  10. 10 Algebraic structures and combinatorial models Geometry and Topology 5 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available46.4%not open53.6%

World: 28% of research is openly available.

with international co-authors47.9%domestic only52.1%

World: 19% is written across borders.

How has Institute of Mathematics and Informatics's research output changed?

Output in 2018–2022 was 37% higher than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Sofia

All research institutions in Sofia

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.