Mathematicians on Postage Stamps

Mathematician is a person whose area of study and research of mathematics. The term is also addressed to those who master the science of mathematics. Unlike science, the general mathematical research is not conducted experiments. In mathematics, the truth is derived from other truths that have been previously known. If the experiment with the computer and numerical data involved, the expected end result is a theorem. The calculation is not a big part of the study of mathematics, and mathematicians do not need to have a great ability to add and multiply numbers. Differences mathematicians with scientists ( eg physicists ) is a mathematician in general do not perform experiments to support or reject its conclusions. Theory of natural science ( eg Newton's gravitational theory ) should be modified or revised, along with the discovery of new data and experimental results are inconsistent with predictions of the theory. On the other hand, the mathematical theory is static. If a theorem is proved, then the theorem is true for all. On site ( http://jeff560.tripod.com ) you can download the image of mathematicians from around the world from A to Z in form of stamps.

One Site, All Countries in The World, All The Themes

Looking for a country stamp catalog on the internet is not difficult, but if we want to find stamp catalog several countries and several themes at once clearly inefficient and spend lots of time by searching one by one. By opening the site freestampcatalogue.com we can read stamp catalogs around the world and the whole themes fully without having to search one by one. On the site is categorized catalog of stamps by country or by thematic, so we are very easy to find.