PORTUGESE 1970 MATHEMATICAL BRAILLE CODE
Table of Contents
Instructions ... 13
Arbitrary symbols and their uses ... 20
Numerals ... 20
Digit or number sign ... 20
Double sign of digit or number ... 21
Ordinal numerals ... 22
Decimal numbers ... 23
Decimal point ... 23
Period ... 23
Fractional numbers ... 23
Fraction Dash ... 23
Mixed numbers ... 24
Roman numerals ... 25
Dash for Roman numerals ... 26
Values and measures ... 26
Coins ... 26
Linear measurements ... 29
Surface measurements ... 31
Agrarian measures ... 32
Volume measurements ... 33
Firewood measures ... 34
Mass measurements (weight) ... 34
Capacity measurements ... 36
Measures angle and time ... 37
Letters ... 40
Letter or alphabetic Sign ... 40
Greek Letters ... 41
Fundamental Operations ... 43
Addition ... 43
Division ... 44
Double signal general operation ... 44
Equality ... 46
More or less ... 46
Less or more ... 46
Multiplication ... 47
General operating Signal ... 47
Subtraction ... 49
Reasons and proportions ... 49
Proportion ... 49
Reason ... 50
Grouping symbols ... 50
Keys or external keys ... 50
Internal Keys ... 50
Square brackets ... 51
Mathematical parentheses ... 51
Index Signs ... 51
Literal bottom Index ... 51
Numerical Bottom Index ... 51
Literal top Index ... 52
Numerical Top Index ... 52
Radical ... 53
Root Sign ... 53
Signs of superior operations ... 56
Roughly equal to ... 56
Difference between ... 56
Different from ... 57
Identical to or congruent with ... 57
Equal to or less than ... 58
Bigger than ... 58
Greater than or equal to ... 58
Greater than, equal to or less than ... 59
Bigger or smaller than ... 59
Less than ... 60
Not identical to or not congruent with ... 60
No bigger than ... 61
No less than ... 61
Similar to ... 62
It varies like ... 62
Progressions ... 62
Arithmetic progression ... 62
Geometric progression ... 63
Combinatorial analysis ... 63
Arrangements with Repetition ... 63
Simple arrangements or arrangements ... 63
Binomial ... 63
Combinations with repetition ... 64
Simple combinations or combinations ... 64
Factorial ... 64
Combinatorial number ... 65
Permutations with repetition ... 65
Simple permutations or permutations ... 65
Logarithms ... 65
Antilogger ... 65
Bar ... 65
The Cologarithm ... 66
Logarithm ... 66
Neperian logarithm ... 66
Trigonometric Functions ... 66
The Cossecant ... 66
Cosine ... 67
Cotangent ... 67
Grows ... 67
Decreases ... 67
Drying ... 70
Sine ... 70
Tangent ... 70
Inverse circular (trigonometric) functions ... 71
Cossecant Bow ... 71
Cosine bow ... 71
Bow cotangent ... 71
Secant Arch ... 72
Arch sine ... 72
Bow Tangent ... 73
Hyperbolic (trigonometric) functions ... 73
Hyperbolic cossecant ... 73
Hyperbolic cosine ... 73
Hyperbolic cotagente ... 74
Hyperbolic secant ... 74
Hyperbolic sine ... 74
Hyperbolic tangent ... 75
Modern symbols ... 76
Asterisks or stars ... 76
Complement or complement set of ... 76
Empty set ... 76
Contains ... 76
Equals or is equivalent to ... 76
It's contained ... 77
Exclusion from zero ... 77
Exists or existential quantifier ... 77
Implies ... 77
Intersection ... 78
Does not contain ... 78
It's not contained ... 78
There is no ... 78
It doesn't belong to ... 79
Small square or little square ... 79
Little triangle ... 79
It belongs to ... 79
Square ... 80
Existential quantifier ... 80
Universal quantifier or whatever ... 80
General representation of Set ... 80
Such that ... 80
Union or meeting ... 80
Miscellaneous ... 81
Angstrom ... 81
Angle ... 81
Cancellation ... 81
Differential coefficient ... 82
Derivative first or simply derivative ... 82
Second derivative ... 82
Where, soon or so ... 82
Two lines ... 82
Infinite ... 83
Full ... 83
Open Range ... 83
Open range on the right ... 83
Open range on the left ... 84
Closed Range ... 84
Limit ... 84
Soon ... 84
Algebraic measure ... 84
Module or absolute value ... 84
No oblique a ... 84
Not parallel to ... 85
Not perpendicular to ... 85
Oblique A ... 85
Parallel to ... 85
Perpendicular to ... 85
Percent ... 86
For a thousand ... 86
So ... 86
Segment ... 86
Second differential coefficient ... 86
Arrow or arrows ... 86
Summation or summation sign ... 87
Tend to ... 87
Triangle ... 87
A nail ... 87
Absolute VALUE ... 87
Vector ... 87
General table of the Braille mathematical signs contained in this code ... 88
Obs.: L. ª ... 88
NOTE: 2nd ... 88
Braille System ... 88
Table ... 89