In this paper we present a tradition
of Conference of Košice Mathematicians that took place in the village Herľany
in the east of Slovakia, known for its unique coldwater
geyser. Over twenty
years ago, in this enchanting environment, a joint discussion forum for scientists,
applied mathematicians and mathematics teachers was created in order to
share, seek and find solutions to scientific, didactic and educational problems.
The paper is also an informal invitation to the 21st Conference of Košice Mathematicians.