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Founding of Information Theory

The founding of information theory refers to the landmark intellectual event initiated by Claude Shannon's 1948 paper 'A Mathematical Theory of Communication,' which established rigorous mathematical foundations for quantifying, transmitting, and storing information.

Type: Event Domain: Mathematics Technology Engineering Era: 1948 — 1948

Overview

Shannon defined information content in terms of probability — rare messages carry more information than expected ones — and introduced entropy, borrowed from thermodynamics, as a measure of uncertainty within a source. His central theorem proved that every communication channel has a finite capacity and that reliable transmission is achievable at any rate below this limit, regardless of noise, given sufficiently sophisticated encoding.

Why it matters

This founding event created an entirely new scientific discipline and provided the theoretical backbone for data compression, error-correcting codes, cryptography, and network communication — technologies that underpin the modern internet, mobile networks, and digital media, making the efficient storage and transmission of data at contemporary scales mathematically possible.

What it builds on

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