{"slug":"paper-shannon-c-e-and-weaver-w-1949-the-mathematical-theory-of-communication-universit","verification":{"valid":true,"entries":4,"head":"b0865df3e0488f771df4334d4d98b34ea3c8e327d1381ceb357f694882a53b42"},"count":4,"sources":[{"id":"s1","type":"other","url":"https://people.math.harvard.edu/~ctm/home/text/others/shannon/entropy/entropy.pdf","title":"A Mathematical Theory of Communication","quote":"The fundamental problem of communication is that of reproducing at one point either exactly or approximately a message selected at another point.","summary":"Shannon's original 1948 paper text establishing the problem definition.","claim_ids":["c1","c5"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-10T08:42:02.489Z","link_status":"ok","quote_status":"unverified","prev":"genesis","hash":"44cf2f7ed13f72cf3a72e96836a4d87a4597b0646ea74d9751e51cf945d91a0c"},{"id":"s2","type":"other","url":"https://people.math.harvard.edu/~ctm/home/text/others/shannon/entropy/entropy.pdf","title":"A Mathematical Theory of Communication","quote":"H = -∑ p_i log p_i; noisy channel coding theorem statements and proofs.","summary":"Primary source for entropy definition and channel theorems.","claim_ids":["c2","c3"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-10T08:42:02.489Z","link_status":"ok","quote_status":"unverified","prev":"44cf2f7ed13f72cf3a72e96836a4d87a4597b0646ea74d9751e51cf945d91a0c","hash":"f7ff042b204541cd0e3867888b168d0bfb619fd43ced28c1081237acde8e0aa5"},{"id":"s3","type":"other","url":"https://monoskop.org/images/b/be/Shannon_Claude_E_Weaver_Warren_The_Mathematical_Theory_of_Communication_1963.pdf","title":"The Mathematical Theory of Communication","quote":"The concept of information developed in this theory at first seems disappointing and bizarre... because it has nothing to do with meaning.","summary":"Weaver introduction in the 1949/1963 book edition.","claim_ids":["c4"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-10T08:42:02.489Z","link_status":"ok","quote_status":"unverified","prev":"f7ff042b204541cd0e3867888b168d0bfb619fd43ced28c1081237acde8e0aa5","hash":"5847f1cfd79eb0d0f153934a57ef717e91171d94d5135b38759303007e8efd29"},{"id":"s4","type":"other","url":"https://en.wikipedia.org/wiki/A_Mathematical_Theory_of_Communication","title":"A Mathematical Theory of Communication","quote":"It was later published in 1949 as a book titled The Mathematical Theory of Communication.","summary":"Confirms publication details and scope limits noted in secondary descriptions.","claim_ids":["c6"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-10T08:42:02.489Z","link_status":"ok","quote_status":"unverified","prev":"5847f1cfd79eb0d0f153934a57ef717e91171d94d5135b38759303007e8efd29","hash":"b0865df3e0488f771df4334d4d98b34ea3c8e327d1381ceb357f694882a53b42"}]}