⊺
See also: ⟙
| ||||||||
Translingual
Symbol
⊺
- (mathematics) The intercalation product (cf. intercalate, intercalation), an operation on multiset permutations[1]
- (p ⊺ q)
- (mathematics, sometimes proscribed) used in superscript as a visually similar alterative to T (the ordinary Latin letter) to represent matrix transposition.[2] See also ⊤ ("down tack"), which is also sometimes used in this manner.
- A⊺
References
- ^ https://tex.stackexchange.com/questions/435328/what-is-the-meaning-of-the-name-of-the-intercal-symbol/728210#728210, wherein is cited: "section 5.1.2 of Donald Knuth's The Art of Computer Programming, Volume 3: Sorting and Searching. A convenient copy of this section can be found at https://www.informit.com/articles/article.aspx?p=2243840", which section adequately explains the concept and also elaborates on its source. To quote in part: "In 1965, Dominique Foata introduced an ingenious idea called the “intercalation product,” which makes it possible to extend many of the known results about ordinary permutations to the general case of multiset permutations. [See Publ. Inst. Statistique, Univ. Paris, 14 (1965), 81–241; also Lecture Notes in Math. 85 (Springer, 1969).]" (brackets original)
- ^ https://tex.stackexchange.com/questions/30619/what-is-the-best-symbol-for-vector-matrix-transpose, wherein also is cited "The Comprehensive LaTeX Symbol List", ftp://tug.ctan.org/pub/tex-archive/info/symbols/comprehensive/symbols-letter.pdf, which states (in relevant part, although some formatting niceties are not reproduced here) "Some people use a superscripted \intercal for matrix transpose: “A^\intercal” 7 → “A⊺”. (See the May 2009 comp.text.tex thread, “raising math symbols”, for suggestions about altering the height of the superscript.) \top (Table 223 on page 123), T, and \mathsf{T} are other popular choices: “A⊤”, “AT ”, “AT”"