Set Theory, Anyone?
in [Math]
|
Prev: The Blank Algorithm
Next: No Putnam spoilers please!
From: Aatu Koskensilta on 7 Dec 2009 03:21 "Peter Webb" <webbfamily(a)DIESPAMDIEoptusnet.com.au> writes: > "Jack Wellington" <jack.wellington8(a)gmail.com> wrote in message > news:3dd0cb11-1281-45c2-9382-c6678e2e79dc(a)9g2000yqa.googlegroups.com... > > 2. H is an element of P(R), yes or no? > ________________________________ > No, as {H} - the set containing H - is an element of P(R). > > 3. Is number e is an element of H? > ___________________________________________ > Yes, because e is Real and H includes all Rationals so it includes Reals. You're kidding, aren't you? -- Aatu Koskensilta (aatu.koskensilta(a)uta.fi) "Wovon man nicht sprechan kann, dar�ber muss man schweigen" - Ludwig Wittgenstein, Tractatus Logico-Philosophicus
From: Frederick Williams on 7 Dec 2009 07:39
Jack Wellington wrote: > > 1. Via Cantor�s zig-zag pattern indicating how the set of natural > numbers and the positive elements of the set of rational numbers are > matched, what element in the set of natural numbers is a match to > 5/3 ? > > 2. H is an element of P(R), yes or no? > > 3. Is number e is an element of H? > > 4 .When matching the points on the segment (0,1) with the points > inside a square with a side of length 1, what is the coordinate of the > point on (0,1) which matches (. 352149, .600217) ? Also, give the > coordinates of a point inside the > square which matches .23504131313� on (0,1) What troubles me about this is not that someone is trying to get their homework done for them, but that not one of these questions can be answered with the information given. How is this degree of stupidity possible? -- Pigeons were widely suspected of secret intercourse with the enemy; counter-measures included the use of British birds of prey to intercept suspicious pigeons in mid-air. Christopher Andrew, 'Defence of the Realm', Allen Lane |