RSA Experimenter vs Character Table Viewer

This app is intended as a tool for understanding a method of encrypting messages known as Public Key Cryptography (RSA). Invented in the 1970's this method still (in 2023) underlies much of the secure electronic transfer of information including communication with a bank (either online or from ATM machines), ordering goods online, transfering medical records and much more. The app is NOT designed for actually sending secure messages; the version of the method implemented here is intensionally a 'toy' version which is more easily understood than the full version. You will see how messages are encoded and decoded and their authenticity verified by using the app to exchange messages with colleagues and friends. The extensive help pages explain most of the mathematics behind this method. It involves concepts often presented to 2nd or 3rd year university students but is accessible to smart and curious middle-school students; the original version of this app was in fact written to accompany a series of sessions of the author with the seventh-grade math class of one of his grandchildren.

Never find yourself missing your point-group-symmetry Character Tables from group theory again. The Character Table Viewer app is designed to offer students of Inorganic Chemistry, Quantum Mechanics, and Group Theory ‘at your fingertips’ access to more than 45 Character Tables for the most chemically relevant Symmetry Point Groups. The tables are easy to find and access with an intuitive and simple interface. They are crisp to read and contain all irreducible representations as well as classifications of relevant linear and binary functions important for understanding things like bonding or vibrational motions. You can customize a list of the ones you most commonly use. You can zoom in on the tables and even compare two side-by-side. This is a ‘must have’ app for advanced chemistry and physics students and researchers.