Common notions (very basic, self-evident assertions)
Posted on January 22, 2010 in Misc
From the book Euclids elements, circa 300 BC, arguably the most important textbook ever written.
- Things which are equal to the same thing are also equal to one another.
- If equals be added to equals, the wholes are equal.
- If equals be subtracted from equals, the remainders are equal.
- Things which coincide with one another are equal to one another.
- The whole is greater than the part.