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Library / Mathematics / First notions of logic (preparatory to the study of geometry) / Braille

First notions of logic (preparatory to the study of geometry) ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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67,011 braille cells · 68 embossed pages at 40×25 · 366 unrepresentable characters omitted

⠎⠥⠉⠓⠀⠞⠓⠁⠞⠀⠞⠓⠑⠀⠁⠝⠎⠺⠑⠗⠂⠀⠼⠦⠍⠕⠎⠞⠀⠏⠗⠕⠃⠁⠃⠇⠽⠂⠄⠀
⠑⠭⠏⠗⠑⠎⠎⠑⠎⠀⠞⠓⠑⠀⠎⠁⠍⠑⠀⠙⠑⠛⠗⠑⠑⠀⠀⠕⠋⠀⠇⠊⠅⠑⠇⠊⠓⠕⠕⠙
⠀⠊⠝⠀⠃⠕⠞⠓⠀⠉⠁⠎⠑⠎⠲⠀⠀⠀⠀⠠⠺⠑⠀⠓⠁⠧⠑⠀⠃⠑⠋⠕⠗⠑⠀
⠑⠭⠏⠇⠁⠊⠝⠑⠙⠀⠞⠓⠁⠞⠀⠇⠕⠛⠊⠉⠀⠓⠁⠎⠀⠝⠕⠞⠓⠊⠝⠛⠀⠞⠕⠀⠙⠕⠀
⠺⠊⠞⠓⠀⠞⠓⠑⠀⠞⠗⠥⠞⠓⠀⠕⠗⠀⠀⠋⠁⠇⠎⠑⠓⠕⠕⠙⠀⠕⠋⠀
⠁⠎⠎⠑⠗⠞⠊⠕⠝⠎⠂⠀⠃⠥⠞⠀⠕⠝⠇⠽⠀⠏⠗⠕⠋⠑⠎⠎⠑⠎⠂⠀
⠎⠥⠏⠏⠕⠎⠊⠝⠛⠀⠞⠓⠑⠍⠀⠞⠗⠥⠑⠂⠀⠞⠕⠀⠀⠉⠕⠇⠇⠑⠉⠞⠀⠁⠝⠙⠀
⠉⠇⠁⠎⠎⠊⠋⠽⠀⠞⠓⠑⠀⠇⠑⠛⠊⠞⠊⠍⠁⠞⠑⠀⠍⠑⠞⠓⠕⠙⠎⠀⠕⠋⠀
⠙⠗⠁⠺⠊⠝⠛⠀⠊⠝⠋⠑⠗⠑⠝⠉⠑⠎⠲⠀⠀⠠⠎⠊⠍⠊⠇⠁⠗⠇⠽⠂⠀⠊⠝⠀⠞⠓⠊⠎
⠀⠏⠁⠗⠞⠀⠕⠋⠀⠞⠓⠑⠀⠎⠥⠃⠚⠑⠉⠞⠂⠀⠺⠑⠀⠙⠕⠀⠝⠕⠞⠀⠞⠗⠕⠥⠃⠇⠑⠀
⠕⠥⠗⠎⠑⠇⠧⠑⠎⠀⠺⠊⠞⠓⠀⠀⠞⠓⠑⠀⠟⠥⠑⠎⠞⠊⠕⠝⠂⠀⠠⠓⠕⠺⠀⠁⠗⠑⠀
⠺⠑⠀⠞⠕⠀⠋⠊⠝⠙⠀⠞⠓⠑⠀⠏⠗⠕⠃⠁⠃⠊⠇⠊⠞⠽⠀⠙⠥⠑⠀⠞⠕⠀
⠏⠗⠑⠍⠊⠎⠑⠎⠦⠀⠃⠥⠞⠀⠺⠑⠀⠀⠁⠎⠅⠒⠀⠠⠎⠥⠏⠏⠕⠎⠊⠝⠛⠀
⠶⠓⠁⠏⠏⠑⠝⠀⠓⠕⠺⠀⠊⠞⠀⠍⠁⠽⠶⠀⠞⠓⠁⠞⠀⠺⠑⠀⠓⠁⠧⠑⠀⠋⠕⠥⠝⠙⠀
⠞⠓⠑⠀⠏⠗⠕⠃⠁⠃⠊⠇⠊⠞⠽⠀⠀⠕⠋⠀⠞⠓⠑⠀⠏⠗⠑⠍⠊⠎⠑⠎⠂⠀
⠗⠑⠟⠥⠊⠗⠑⠙⠀⠞⠓⠑⠀⠏⠗⠕⠃⠁⠃⠊⠇⠊⠞⠽⠀⠕⠋⠀⠞⠓⠑⠀
⠉⠕⠝⠉⠇⠥⠎⠊⠕⠝⠲⠀⠠⠺⠓⠑⠝⠀⠞⠓⠑⠀⠀⠕⠙⠙⠎⠀⠊⠝⠀⠋⠁⠧⠕⠥⠗⠀⠕⠋
⠀⠁⠀⠉⠕⠝⠉⠇⠥⠎⠊⠕⠝⠀⠁⠗⠑⠂⠀⠎⠁⠽⠀⠼⠋⠀⠞⠕⠀⠼⠁⠂⠀⠞⠓⠑⠗⠑⠀
⠁⠗⠑⠂⠀⠕⠥⠞⠀⠕⠋⠀⠑⠧⠑⠗⠽⠀⠀⠼⠛⠀⠏⠕⠎⠎⠊⠃⠇⠑⠀⠉⠓⠁⠝⠉⠑⠎⠂⠀
⠼⠋⠀⠊⠝⠀⠋⠁⠧⠕⠥⠗⠀⠕⠋⠀⠞⠓⠑⠀⠉⠕⠝⠉⠇⠥⠎⠊⠕⠝⠂⠀⠁⠝⠙⠀⠼⠁⠀
⠁⠛⠁⠊⠝⠎⠞⠀⠊⠞⠲⠀⠀⠠⠓⠑⠝⠉⠑⠀⠀⠁⠝⠙⠀⠀⠺⠊⠇⠇⠀⠗⠑⠏⠗⠑⠎⠑⠝⠞
⠀⠞⠓⠑⠀⠏⠗⠕⠏⠕⠗⠞⠊⠕⠝⠎⠂⠀⠋⠕⠗⠀⠁⠝⠙⠀⠁⠛⠁⠊⠝⠎⠞⠂⠀⠕⠋⠀
⠁⠇⠇⠀⠀⠞⠓⠑⠀⠏⠕⠎⠎⠊⠃⠇⠑⠀⠉⠁⠎⠑⠎⠀⠺⠓⠊⠉⠓⠀⠑⠭⠊⠎⠞⠲⠀⠀⠀⠀
⠠⠞⠓⠥⠎⠀⠺⠑⠀⠓⠁⠧⠑⠀⠞⠓⠑⠀⠎⠥⠉⠉⠑⠎⠎⠊⠕⠝⠀⠕⠋⠀⠎⠥⠉⠓⠀
⠗⠑⠎⠥⠇⠞⠎⠀⠁⠎⠀⠊⠝⠀⠞⠓⠑⠀⠋⠕⠇⠇⠕⠺⠊⠝⠛⠀⠞⠁⠃⠇⠑⠒⠤⠤⠀⠀⠀⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.