Everyone’s heard it: “Let them eat cake”. It’s quoted in movies, textbooks, and dinner-table debates. But there’s a twist—Marie Antoinette probably never said those words. Historians have traced the ...
I think that "Let A be a set, let B be a group, and let C be a number." is the most formal phrasing. Since this is a mathematically formal usage, I think that would be preferred, but I don't think any of the phrases you presented are wrong, and "Let A be a set, B a group, and C a number." is shorter and more succinct. On a separate note, we have a sister site for Math you might consult.
MSN: People think Marie Antoinette said "Let them eat cake" during a famine, but the quote actually appeared in print years before she was even queen.
People think Marie Antoinette said "Let them eat cake" during a famine, but the quote actually appeared in print years before she was even queen.
Many people use "let, let's and lets" in conversation What's the difference between them?
grammar - Let ... then ... in mathematical definition - English ...
Let’s is the English cohortative word, meaning “let us” in an exhortation of the group including the speaker to do something. Lets is the third person singular present tense form of the verb let meaning to permit or allow. In the questioner’s examples, the sentence means to say “Product (allows/permits you to) do something awesome”, so the form with lets is correct.
verbs - "Let's" vs. "lets": which is correct? - English Language ...
meaning - Difference between Let, Let's and Lets? - English Language ...