"This is good. This is tensor product."
Jul. 13th, 2005 06:57 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
sniffnoyI forgot about this - so during Dustin's "Topology of the Plane" lecture, when he gave an example and a nonexample of something - I forget what - he pointed to the example, made a check mark, and said "This is good", the pointed to the nonexample, made a circle with an X through it, and said, "This is tensor product".
Dustin, explaining his drawings of neighborhoods, specifically open balls, around points: I draw small balls. [class laughs] I mean, balls can be any size, take ε=20 million, but think about small balls.
So today in Number Theory Glenn presented the actual definition of GCD we would use, to which there was some objection; Irina made what is probably the strangest comment I have heard yet: [talking about the GCD of 0 and 0, after it had been explained why, by this definition, (0,0)=0] What if a and b equal 0, and for some reason you decide that the divisors are all the powers of 2, say, up to 64?
Glenn took a bit to understand this, and finally just said "But the divisors of 0 *aren't* just the powers of 2..." I have no idea what she could have been thinking.
So either Matt or Eli bought, or perhaps brought with them, a big tub of cheese curls. As they point out, they're topologically equivalent to balls! "They're topologically equivalent, but they don't taste the same!" Anyway, so they decided to leave it out in the 8th floor lounge and see what happened. The next day, it was gone. Not empty, gone. Today Michael Ty asked me for some help on one of the problems, and I noticed that it had ended up in his room. He claims he has no idea how it got there. Anton says he was in there with it earlier, though, and may have left it there, so he may actually be telling the truth. Regardless, they are now restored.
-Sniffnoy
Dustin, explaining his drawings of neighborhoods, specifically open balls, around points: I draw small balls. [class laughs] I mean, balls can be any size, take ε=20 million, but think about small balls.
So today in Number Theory Glenn presented the actual definition of GCD we would use, to which there was some objection; Irina made what is probably the strangest comment I have heard yet: [talking about the GCD of 0 and 0, after it had been explained why, by this definition, (0,0)=0] What if a and b equal 0, and for some reason you decide that the divisors are all the powers of 2, say, up to 64?
Glenn took a bit to understand this, and finally just said "But the divisors of 0 *aren't* just the powers of 2..." I have no idea what she could have been thinking.
So either Matt or Eli bought, or perhaps brought with them, a big tub of cheese curls. As they point out, they're topologically equivalent to balls! "They're topologically equivalent, but they don't taste the same!" Anyway, so they decided to leave it out in the 8th floor lounge and see what happened. The next day, it was gone. Not empty, gone. Today Michael Ty asked me for some help on one of the problems, and I noticed that it had ended up in his room. He claims he has no idea how it got there. Anton says he was in there with it earlier, though, and may have left it there, so he may actually be telling the truth. Regardless, they are now restored.
-Sniffnoy
