Library / Mathematics / The Number Concept / Braille
The Number Concept ⠃⠗⠋ 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.
Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt
337,857 braille cells · 355 embossed pages at 40×25 · 6,549 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.