The symbol ≅ is used for isomorphism of objects of a category, and in particular for isomorphism of categories (which are objects of CAT). The symbol ≃ is used for equivalence of categories. At least, this is the convention used in this book and by most category theorists, although it is far from universal in mathematics at large.
$\\mathbb Q$ is used to represent rational numbers. $\\mathbb R$ is used to represent reals. Is there a symbol or convention that represents irrationals. Possibly $\\mathbb R - \\mathbb Q$?
There is a common thread running through many of the mysteries and hints in the series—the mysterious symbol, (alleged) astronomical symbols, cannibalism, and the sign of the bird and water symbolism in Episode 8. This thread also runs through questions with seemingly obvious answers, especially, “Why is the series called Yellowjackets?” It all boils down to trigonometry, occultations ...
What is the symbol ≙ most commonly used for in a mathematical or math-related context? LaTeX produces the symbol with \hateq. The symbol has Unicode codepoint U+2259. The respective Unicode code c...
I personally think that it's a symbol of his transition into a semi-delusional relationship with his "mother" (the sand). Only the sand loves him, so it wrote love, but the sand also hurts him, so it wrote love in the form of a bloody scar. Or he just wanted a cool tattoo. Reply reply more repliesMore replies more replyMore repliesMore replies
An unsophisticated question from a neophyte: Given the numbers: $1,2,3,4,5$ What is the symbol for the range of the numbers? i.e. the lowest-highest number in the set. For example, the min max ...
In set theory \mid or : is often used but I haven't really seen any logical symbol used for "such that" in other situations. But now that I think of it there is the \ni symbol used as "such that" in mathematical logic I believe.
