Talk:Tensor

"a many-particle wave function can be written as a tensor product of one-particle wave functions" – really so? Or a sum of such products? --Boris Tsirelson 20:00, 5 March 2011 (EST)

[edit] To Unicode or not, that's the question

I do not see the letter 𝒯 on my screen. Do others? --Boris Tsirelson 13:41, 27 July 2011 (EDT)

I can see it properly.—Tom Larsen (talk) 01:55, 28 July 2011 (EDT)

What browser do you use? Chrome, no doubt? Firefox-5 and IE-9 show it, Chrome does not.--Paul Wormer 04:04, 28 July 2011 (EDT)

Iceweasel 3.0.6, in fact. --Boris Tsirelson 04:59, 28 July 2011 (EDT)

But, worse, Safari 5.0.4 does not show it. --Boris Tsirelson 05:07, 28 July 2011 (EDT)

Epiphani 2.22.3 does not. --Boris Tsirelson 05:11, 28 July 2011 (EDT)

Boris, are you a collector of rare browsers? But no kidding, we must decide if we want Unicode characters. As far as I understand it, in the longer term all browsers are supposed to support them, and if a browser doesn't, it will disappear from the market. It all depends on time scale, if it is a matter of months that most browsers will support the same character set as FF and IE, then I say use Unicode (because it so much nicer than in-line TeX). If it is a matter of years then maybe we (or mostly I) should go back to TeX. For me Chrome is pretty crucial, it has many users and is on the rise. Do any of you know what Google's plans are?--Paul Wormer 08:14, 28 July 2011 (EDT) PS Is MathJax based on Unicode by any chance?

One more thought: the question that I entered as title for this thread is invalid. When your browser shows you Knowino text, it is set for Unicode UTF-8 already. So the question is: which subset of Unicode characters is allowed?--Paul Wormer 08:43, 28 July 2011 (EDT)

Yes, in some sense I am a collector of rare browsers. Or rather: I do not use Windows; mostly I use Debian Linux (on a virtual PC hosted by my Mac Mini), and sometimes I use MacOS ("Snow Leopard") on the Mac itself. Iceweasel and Epiphani work under the Linux (Epiphany being its native browser, while Iceweasel is a copy of Firefox, but surely not of its last version). Safari is the native browser of MacOS (this is why I bother about it first: it can be widely used by Mac users). But you are right in the sense that I do not like to update my soft often; once a year or even two is my rate. Probably I am too untypical in this respect, and indeed, you should not bother too much. --Boris Tsirelson 10:02, 28 July 2011 (EDT)

Now my Linux is upgraded, and I see the symbol (on Iceweasel 3.5.16, but not Epiphani 2.30.6). --Boris Tsirelson 16:46, 1 August 2011 (EDT)

Good, hopefully all browsers will follow.--Paul Wormer 01:17, 2 August 2011 (EDT)