Handbook of the History and Philosophy of Mathematical Practice

Spherics

Spherics (sometimes spelled sphaerics or sphaerica) is a term used in the history of mathematics for historical works on spherical geometry, exemplified by the Spherics…

Glossary of logic

This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.

Dichromatic symmetry

Dichromatic symmetry, also referred to as antisymmetry, black-and-white symmetry, magnetic symmetry, counterchange symmetry or dichroic symmetry, is a symmetry operation…

Dichromatic symmetry

Dichromatic symmetry, also referred to as antisymmetry, black-and-white symmetry, magnetic symmetry, counterchange symmetry or dichroic symmetry, is a symmetry operation…