Piet Hein was a Danish polymath. He was an expert in mathematics and was also an inventor, designer, and writer. He studied at the University of Copenhagen and Technical University of Denmark. He joined the Danish resistance movement when the Germans invaded Denmark. In his later years, he invented the Soma cube and devised the games of Hex and Tower.
Agner Krarup Erlang was a Danish mathematician, statistician, and engineer. he graduated from the University of Copenhagen with distinction and worked as a teacher for many years. He is best known for inventing the fields of traffic engineering and queueing theory. He is also credited with the creation of the field of telephone networks analysis.
Not only was Harald Bohr the younger brother of Nobel Prize-winning physicist Niels Bohr, but he was also a renowned mathematician in his own right. He is remembered for his research on periodic functions. Interestingly, he was also part of the silver-winning Danish football team at the 1908 London Olympics.
Thomas Bartholin was a Danish physician, theologian, and mathematician. He is best remembered for discovering the lymphatic system in human beings. Thomas Bartholin is also known as the first person to scientifically describe refrigeration anesthesia, which is widely used today, especially while performing major amputations of the limbs.