Adam Bobrowski is a professor and Chairman of the Department of Mathematics at Lublin University of Technology, Poland. He has authored over 50 scientific papers and two books, Functional Analysis for Probability and Stochastic Processes and An Operator Semigroup in Mathematical Genetics.

'This book is excellent in many respects. It is beautifully written, it contains many new and clever arguments, and it is a long, connected story told by a masterful storyteller. … Operator semigroup theory continues to grow and thrive and new and unexpected applications continue to lead to new theory. There is a large textbook/monograph literature including the early book by Hille and by Hille and Phillips, and later books by, alphabetically, Cialdea and Maz'ya, Davies, Dunford and Schwartz, Engel and Nagel, Fattorini, Goldstein, Kato, Krein, Lax, Nagel et al., Pazy, and Yosida. Bobrowski's book stands with these as books which contain information about theory and applications which could not be found elsewhere at the time of publication. Bobrowski's superb exposition and his wide scope and new applications will keep the semigroup community busy. We can all be grateful.' Jerome A. Goldstein, Semigroup Forum

• Preface; 1. Semigroups of operators; Part I. Regular Convergence: 2. The first convergence theorem; 3. Example - boundary conditions; 4. Example - a membrane; 5. Example - sesquilinear forms; 6. Uniform approximation of semigroups; 7. Convergence of resolvents; 8. (Regular) convergence of semigroups; 9. Example - a queue; 10. Example - elastic boundary; 11. Example - membrane again; 12. Example - telegraph; 13. Example - Markov chains; 14. A bird's-eye view; 15. Hasegawa's condition; 16. Blackwell's example; 17. Wright's diffusion; 18. Discrete-time approximation; 19. Discrete-time approximation - examples; 20. Back to Wright's diffusion; 21. Kingman's n-coalescent; 22. The Feynman–Kac formula; 23. The two-dimensional Dirac equation; 24. Approximating spaces; 25. Boundedness, stablization; Part II. Irregular Convergence: 26. First examples; 27. Example - genetic drift; 28. The nature of irregular convergence; 29. Convergence under perturbations; 30. Stein's model; 31. Uniformly holomorphic semigroups; 32. Asymptotic behavior of semigroups; 33. Fast neurotransmitters; 34. Fast neurotransmitters II; 35. Diffusions on graphs and Markov chains; 36. Semilinear equations; 37. Coagulation-fragmentation equation; 38. Homogenization theorem; 39. Shadow systems; 40. Kinases; 41. Uniformly differentiable semigroups; 42. Kurtz's theorem; 43. A singularly perturbed Markov chain; 44. A Tikhonov-type theorem; 45. Fast motion and frequent jumps; 46. Gene regulation and gene expression; 47. Some non-biological models; 48. Convex combinations of generators; 49. Dorroh and Volkonskii theorems; 50. Convex combinations in biology; 51. Recombination; 52. Recombination (continued); 53. Khasminskii's example; 54. Comparing semigroups; 55. Asymptotic analysis; 56. Greiner's theorem; 57. Fish dynamics; 58. Emergence of transmission conditions; 59. Emergence of transmission conditions II; Part III. Convergence of Cosine Families: 60. Regular convergence; 61. Cosines converge in a regular way; Part IV. Appendices: 62. Laplace transform; 63. Measurability implies continuity; References; Index.