1860
ID: 374
De Morgan's 'Syllabus of a Proposed System of Logic' extends logical notation and develops the logic of relations
ID: 374
1860
ID: 927
Karl Weierstrass develops systematic theory of analytic functions - precise calculation for engineering
ID: 927
1860
ID: 928
Henry Bessemer patents Bessemer process for mass-producing steel - revolutionizes materials science
ID: 928
1860
ID: 926
June 1860
Garibaldi raised to degree of Master Mason in newly conquered Palermo
ID: 926