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This Braille Code for Mathematics and Science Notation has been prepared to provide a system of symbols which will allow technical literature to be presented and read in braille. The Code is intended to convey as accurate an impression as is possible to the braille reader of the corresponding printed text, and this is one of its principal features.
The Gardner–Salinas braille codes are a proposed method of encoding mathematical and scientific notation linearly using braille cells for tactile reading by the visually impaired. The most common form of Gardner–Salinas braille is the 8-cell variety, commonly called GS8. There is also a corresponding 6-cell form called GS6. [1]
For example, ⠌ dots 3-4 represents / in Braille ASCII, and this is the Braille slash, but ⠿ dots 1-2-3-4-5-6 represents =, and this is not the equals sign in Braille. Braille ASCII more closely corresponds to the Nemeth Braille Code for mathematics than it does to the English Literary Braille Code, as the Nemeth Braille code is what it was ...
The Braille pattern dots-12456 ( ⠻) is a 6-dot braille cell with both top, both middle, and the bottom right dots raised, or an 8-dot braille cell with both top, both upper-middle, and the lower-middle right dots raised. It is represented by the Unicode code point U+283b, and in Braille ASCII with a closing bracket: ].
The Braille pattern dots-3456 ( ⠼) is a 6-dot braille cell with the top right, middle right, and both bottom dots raised, or an 8-dot braille cell with the top right, upper-middle right, and both lower-middle dots raised. It is represented by the Unicode code point U+283c, and in Braille ASCII with a number sign: #.
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The Braille pattern dots-35 ( ⠔) is a 6-dot braille cell with the bottom left and middle right dots raised, or an 8-dot braille cell with the lower-middle left and upper-middle right dots raised. It is represented by the Unicode code point U+2814, and in Braille ASCII with the number 9.
The Braille pattern dots-345 ( ⠜) is a 6-dot braille cell with the top and middle right and bottom left dots raised, or an 8-dot braille cell with the top and upper-middle right, and lower-middle left dots raised. It is represented by the Unicode code point U+281c, and in Braille ASCII with the greater-than sign: >.