Mathematics

1. Operators 100%
2. Asymptotics 98%
3. Matrix 98%
4. Hankel Operator 93%
5. Self-Adjoint Operator 42%
6. Spectral Theory 34%
7. Self-Adjoint 33%
8. Spectral Density 32%
9. Spectral Projection 29%
10. Singular Value 25%
11. Toeplitz Operator 19%
12. Variables 19%
13. Spectral Shift Function 18%
14. Essential Spectrum 18%
15. Multiplicative 18%
16. Leading Term 15%
17. Explicit Formula 14%
18. Unit Circle 13%
19. Real Line 13%
20. Sequences 13%
21. Integral Operator 13%
22. Discontinuous Functions 13%
23. Points 12%
24. Constant 11%
25. Asymptotic Behavior 10%
26. Hankel Matrix 10%
27. Piecewise Continuous Function 9%
28. Integral 9%
29. Zeros 7%
30. Measures 7%
31. Piecewise 7%
32. Coincides 7%
33. Hardy Space 7%
34. Restriction Map 6%
35. Sharp Estimate 6%
36. Approximation of Function 6%
37. Theoretic Method 6%
38. PDE 6%
39. Limit Theorem 6%
40. Subspace 6%
41. Asymptotic Formula 6%
42. Rational Approximation 6%
43. Rational Function 6%
44. Inverse Spectral Problem 6%
45. Jacobi Matrix 6%
46. Number 6%
47. Moment Problem 6%
48. Nonnegativity 6%
49. Trace Formula 6%
50. Laplace Operator 6%