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 …

Mar 5, 2011 · Other symbols I have seen used for "is defined to be equal to" are three horizontal lines instead of two, and $=$ with either a triangle or "def" written directly above it. I have seen …

Nov 7, 2015 · 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, …

Oct 3, 2023 · What is the multiplication sign on a standard keyboard? The symbol for multiplication on your keyboard is the little star or Asterisk, the one above the 8, press shift 8.

Feb 14, 2025 · How do you sign a letter of recommendation? To sign a letter of recommendation, you should include your full name, your title or position, and your contact information.

Why do we reverse inequality sign when dividing by negative number? Ask Question Asked 13 years, 10 months ago Modified 5 years, 1 month ago

I'm curious what sign means in the context of mathematical notation. I'm reading a paper right now and it uses: $$ sign \\overrightarrow{\\lambda} \\cdot \\overrightarrow{a} $$ Is that …

Feb 15, 2025 · Yes, you typically need to sign the back of a check in order to deposit it. This signature is known as an endorsement and is required by most banks to verify the authenticity …

Mar 7, 2025 · Sign your name exactly as it appears on the front of the card, ensuring consistency for verification purposes. Avoid using a marker or pencil, as these may fade or be erased over …

Jan 11, 2012 · What does this "double less than or equals to" sign mean? Ask Question Asked 13 years, 9 months ago Modified 12 months ago