Abraham Nemeth kept his braille math code secret until a colleague's unplanned request for a table of integrals forced its disclosure — a documented mechanism for why private notation stays private by default

Abraham Nemeth built his braille mathematics code privately while working at the American Foundation for the Blind, "studying after work and developing his own way of representing mathematical formulas," because he had noticed that existing braille notation for advanced mathematics was "poor or non-existent." Crucially, he "initially kept the secret of this system." It surfaced only when Clifford Witcher, a blind physicist collaborating with the AFB, asked him for a braille table of integrals; Nemeth then invited Witcher to learn the technique. Witcher urged him to present it, and the code was introduced to the Joint Uniform Braille Committee in 1952 — after which it institutionalized quickly.

This is the clearest documented mechanism in the record for why a blind mathematician's private notation stays private rather than propagating: it is invented alone, for a private purpose, kept undisclosed by the inventor, and surfaces only through an unplanned personal circumstance — not through the inventor seeking to share a solution to a shared problem. The finding matters because it supplies the missing default half of the pattern in claim-blind-mathematicians-independently-reinvented-private-notation and claim-salinas-and-nemeth-independently-invented-braille-math-codes: independent reinvention is what you get when private tools have no channel out of one head. Once a channel opens (a committee, a colleague's odd request), institutionalization can be fast — the Nemeth Code became a US standard and still runs parallel to Unified English Braille (claim-bana-2012-ueb-adoption-kept-nemeth-code-parallel).

This default non-transmission stands in tension with a documented counter-example for mathematical method: claim-antoine-personally-taught-his-method-to-morin. The open question of why notation specifically fails to transfer while methods can is routed at question-why-blind-math-notation-doesnt-transmit-while-method-does.