Born
1728
Died
1777
Nationality
German-Swiss
Events involving Johann Heinrich Lambert (3)
1761
ID: 559
Johann Lambert proves π is irrational - first rigorous proof π cannot be expressed as ratio of integers
ID: 559
1764
ID: 440
Johann Heinrich Lambert develops linear diagrams for logic and improved logical notation
ID: 440
1777
ID: 441
Lambert's 'Neues Organon' published posthumously, advancing symbolic logic and anticipating Boolean algebra
ID: 441