Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20121021 05:34:26
ZahlenI was originally born in India, where I learned something different then here in Canada. Here, I hear (word pun!) that the symbol for Integers is I, however I recall being taught that Integer was represented by Z (as in the German word Zahlen) meaning "to count upwards". I have discovered a truly marvellous signature, which this margin is too narrow to contain. Fermat Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. Archimedes Young man, in mathematics you don't understand things. You just get used to them.  Neumann #2 20121021 05:39:47
Re: ZahlenYes, the boldface 'Z' is German for 'zahl', which I think is German for 'integer'. I've only ever seen "I" used to represent the set of all imaginary numbers, and to denote the identity mapping. #3 20121021 05:45:04
Re: ZahlenI believe imag numbers are represented with a C, is it not? In the education system here, they showcase Integer as I. I have discovered a truly marvellous signature, which this margin is too narrow to contain. Fermat Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. Archimedes Young man, in mathematics you don't understand things. You just get used to them.  Neumann #4 20121021 05:49:58
Re: ZahlenC? Hmm, I have never seen that before. I've only seen C for the complex numbers. Does C+ have any meaning in your system, just out of interest? #5 20121021 05:51:42
Re: Zahlen
C are complex numbers. The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #6 20121021 05:51:56
Re: ZahlenBy C, I meant C with a dash on top:  I have discovered a truly marvellous signature, which this margin is too narrow to contain. Fermat Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. Archimedes Young man, in mathematics you don't understand things. You just get used to them.  Neumann #7 20121021 06:46:03
Re: ZahlenI prefer iR. The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #8 20121021 07:06:41
Re: ZahlenAh. So there is no actual specified system for the representation of such number systems. They should call it SINS, as in System Internationale Number Systems (not implying that it is morally degenerate however). I have discovered a truly marvellous signature, which this margin is too narrow to contain. Fermat Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. Archimedes Young man, in mathematics you don't understand things. You just get used to them.  Neumann #10 20121021 07:21:39
Re: ZahlenOf course. But those are all just conventional. You could call the naturals F, although nobody would know you are referring to them, unless you specify your notation... The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #11 20121021 07:24:01
Re: ZahlenThat is my pet peeve. I almost always go berserk when I am reading something and the guy defines something in a non standard way. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 