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 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.
Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt
57,295 braille cells · 57 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.