These proceedings are reporting on the conference ''Math Everywhere", a successful event celebrating a leading scientist, promoting ideas he pursued and sharing the open atmosphere he is known for. The broad spectrum of contributions to this volume illustrates that its title is correct. The areas of the contributions are the following: Deterministic and Stochastic Systems. Mathematical Problems in Biology, Medicine and Ecology. Mathematical Problems in Industry and Economics.
Disciplinarity is basic for interdisciplinarity. This statement seems to be trivial, however, everyone, not influenced by fashionable trends and buzzwords entering more and more also science, will find out that it is nontrivial at all in practice. Competence in mathematics and the field of application are both needed. The relevance of mathematical theory is getting more obvious the more one faces the challenges of real life applications. It is a well-known fact that mathematical modelling of real problems very often leads to frontiers of mathematical theory and requires new mathematical methods. This conference combined competence in mathematical theory and methods with competence in the fields of applications.
