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- What is the meaning of ⊊? - Mathematics Stack Exchange
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 ≤ or lt
- notation - What does := mean? - Mathematics Stack Exchange
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) " Basically, some people think that there should be notational difference between saying "I define blah to be equal to blankety " and saying " blah is equal to blankety " So they use := for the first and = for the latter Usually, it is clear from context
- notation - what does ≼ or ≺ mean? - Mathematics Stack Exchange
You'll need to complete a few actions and gain 15 reputation points before being able to upvote Upvoting indicates when questions and answers are useful What's reputation and how do I get it? Instead, you can save this post to reference later
- Much less than, what does that mean? - Mathematics Stack Exchange
What exactly does $\\ll$ mean? I am familiar that this symbol means much less than but what exactly does "much less than" mean? (Or the corollary, $\\gg$) On Wikipedia, the example they use i
- notation - What does ∈ mean? - Mathematics Stack Exchange
I have started seeing the "∈" symbol in math What exactly does it mean? I have tried googling it but google takes the symbol out of the search
- notation - Whats the difference between ≡ and ≣? - Mathematics . . .
$\equiv$ and similar variations are a generic symbols used to notate an equivalence relation $=$ is the specific equivalence relation "equals" that we are used to with sets and natural numbers and by extension is also the symbol used for equality of rational, real, complex numbers etc For more information on the definition of a specific equivalence relation, you will need to provide
- inequality - What does lt; gt; mean? - Mathematics Stack Exchange
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 that says th
- What is ≡ operator used for in math?
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 values So $\cos^2\theta +\sin^2\theta \equiv 1 $ since it's true for all $\theta$ whereas $\cos\theta = 1$ since it's true only for some
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