So let’s tell you something about me first. I’m a German student, studying Library Science at the TH Köln in Cologne and got the chance to work as an intern at the University of St Andrews Library. 1,159 more words

## Tags » Euclid

#### Infinitude of Primes

It is well known that there are infinitely many primes. The proof by Euclid is among the first we see as rising mathematicians. Though it is often put into a proof by contradiction context, the original proof does not actually contain a reducto ad absurdum argument. 227 more words

#### Quotations - Greek-Roman

Better be wise by the misfortunes of others than by your own.

In critical moments even the very powerful have need of the weakest.

It is thrifty to prepare today for the wants of tomorrow. 1,918 more words

#### Fractal Wisdom

a riot of sameness

possessing illusions

at distance of difference

self-similar shapes

not of one two or three

but a fourth finely

fractioned dimension

right there just in front… 98 more words

#### Area of Rectangle

When we learn to find area enclosed by a curve, we are told to divide area in rectangular elements.

But, how do we always know the value of area of rectangle? 551 more words

#### Spinoza's Geometrical Ethics

Benedict Spinoza, admiring the certainty of geometry, writes his *Ethics Demonstrated in Geometrical Order *in a manner imitating that of Euclid’s *Elements*.

Omitting his definitions and axioms for the moment, we can look at his proofs. 824 more words

#### Second Package from Estonia

I don’t do many trades by post, the postal service here is unreliable and the cost is high. I have however traded with one Facebook friend in Estonia. 264 more words