In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators B...

Mar 5, 2011 · What does := mean? where we are saying that the two sides are equal, but we are not defining "1" to be the expression " sin2(θ) +cos2(θ) sin 2 (θ) + cos 2 (θ) ". Basically, some people …

Dec 22, 2020 · I have encountered this when referencing subsets and vector subspaces. For example, T ⊊ span(S) should mean that T is smaller than span(S)--at least from what I've gathered. Is ⊊ a sort of …

Nov 7, 2015 · What exactly does ≪ ≪ mean? I am familiar that this symbol means much less than. ...but what exactly does "much less than" mean? (Or the corollary, ≫ ≫) On Wikipedia, the example they …

Since your professor was referring to engineering students, then it's likely they were referring to the identity symbol, which is used in an expression to mean the left and right hand sides are true for all …

Jul 28, 2021 · What do the less-than and greater-than symbols right next to each other mean? Does it mean either less than or greater than? In other words, not equal? I am trying to understand a book …

May 6, 2015 · The meaning of various equality symbols Ask Question Asked 10 years, 9 months ago Modified 9 years, 9 months ago

The curly versions of the less than and greater than signs are commonly used to denote some other ordering than the one that we are usually talking about. For instance there is a partial ordering on the …

Aug 26, 2017 · It seems like perpendicular and normal would not have a nice meaning whereas orthogonal would as it is defined in terms of the dot product. Can someone give me a detailed …

Jul 22, 2010 · Just to enlarge on Harry's answer: Your symbol denotes one of two specified notions of implication in formal logic ⊢ ⊢ -the turnstile symbol denotes syntactic implication (syntactic here …