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Calculator spelling is an unintended characteristic of the seven-segment display traditionally used by calculators, in which, when read upside-down, the digits resemble letters of the Latin alphabet. Each digit may be mapped to one or more letters, creating a limited but functional subset of the alphabet, sometimes referred to as beghilos (or ...
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula.
Calculator spelling is the formation of words and phrases by displaying a number and turning the calculator upside down. [33] The jest may be formulated as a mathematical problem where the result, when read upside down, appears to be an identifiable phrase like " ShELL OIL " or " Esso " using seven-segment display character representations ...
Apparently, if you input certain numbers and turned the calculator upside-down, it formed amusing words. Well, amusing to us anyway. If you punched in 71077345 and flipped the device, it gave a ...
To get the answer, you multiply 14215469 by 5, so that 71077345 appears, turn the calculator upside down, and on 7-segment displays it appears as "ShEll OIl". Here's an apparent reference which shows up in Google (I haven't seen the article): "The Electronic Pocket Calculator: Joke 1:" by Lois A. Monteiro Western Folklore , Vol. 35, No. 1 (Jan ...
Calculator spelling is an unintended characteristic of the seven-segment display traditionally used by calculators, in which, when read upside-down, the digits resemble letters of the Latin alphabet. Also, palindromic numbers and strobogrammatic numbers sometimes attract attention of mathematician ambigrammists.
The nabla symbol, written as an upside-down triangle and pronounced "del", denotes the vector differential operator. When a coordinate system is used in which the basis vectors are not functions of position, the gradient is given by the vector [ a ] whose components are the partial derivatives of f {\displaystyle f} at p {\displaystyle p} . [ 2 ]
The font used in the TeX rendering is an italic style. This is in line with the convention that variables should be italicized. As Greek letters are more often than not used as variables in mathematical formulas, a Greek letter appearing similar to the TeX rendering is more likely to be encountered in works involving mathematics.