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When defining a term, do not use the phrase "if and only if". For example, instead of A function f is even if and only if f(−x) = f(x) for all x; write A function f is even if f(−x) = f(x) for all x. If it is reasonable to do so, rephrase the sentence to avoid the use of the word "if" entirely. For example,
However, some authors such as Diophantus used some symbols as abbreviations. The first systematic use of formulas, and, in particular the use of symbols for unspecified numbers is generally attributed to François Viète (16th century). However, he used different symbols than those that are now standard.
Mathematical fiction is a genre of creative fictional work in which mathematics and mathematicians play important roles. The form and the medium of the works are not ...
Babylonian mathematics were written using a sexagesimal (base-60) numeral system. From this derives the modern-day usage of 60 seconds in a minute, 60 minutes in an hour, and 360 (60 × 6) degrees in a circle, as well as the use of minutes and seconds of arc to denote fractions of a degree. Babylonian advances in mathematics were facilitated by ...
"The Library of Babel" was originally written by Borges in 1941, [3] based on an earlier essay he had published in 1939 while working as a librarian. [4] It concerns a fictional library containing every possible book of a certain fixed length, over a 25-symbol alphabet (which, including spacing and punctuation, is sufficient for the Spanish language). [5]
The common practice of most members of WikiProject mathematics is the following: Use of {} and {} for isolated variables and {} for simple inline formulas; or alternately the use of LaTeX for these purposes (optionally using the {} template), especially on articles with many complex formulas or where rendering seems inconsistent
Sibilance is used most successfully in stanzas one and five. The writer uses sibilance to imitate the sound and atmosphere she describes. In stanza one, she is imitating the "silent sign," and in stanza five she is trying to create a serene atmosphere that is "soft" and "sweetly spoke" by using the soft "s" sound repeatedly.
Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.