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What is the difference between an infinite set of 1 dollar bills and an infinite set of 20 dollar bills?

score 1k · Answer 1 · 2026-03-26 02:48:59

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What is the difference between an infinite set of 1 dollar bills and an infinite set of 20 dollar bills?

Published on 26 Mar 2026 - 2:48

score 852 · Answer 2 · 2018-10-01 01:00:46

852

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Linear algebra: Direct sum decomposition

Published on 01 Oct 2018 - 1:00

score 469 · Answer 3 · 2018-10-06 05:02:29

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Is $\Bbb Q$ a decomposable module over $\Bbb Z$ or not?

Published on 06 Oct 2018 - 5:02

score 75 · Answer 4 · 2018-10-06 05:33:49

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If $M = P \oplus Q$ then is $M\cap N = (P \cap N) \oplus (Q \cap N)$

Published on 06 Oct 2018 - 5:33

score 32 · Answer 5 · 2018-10-06 14:20:45

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Let $M=\Bbb Z^2$ . If $N$ and $P$ internal direct summands of $M$ , then does it follow that $N+P$ is also an internal direct summand of $M$

Published on 06 Oct 2018 - 14:20

score 133 · Answer 6 · 2018-10-09 05:04:37

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Addition and Direct Sums of Subspaces

Published on 09 Oct 2018 - 5:04

score 125 · Answer 7 · 2018-10-10 12:30:55

125

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Existence of subspace

Published on 10 Oct 2018 - 12:30

score 93 · Answer 8 · 2018-10-11 04:53:28

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Direct Sum involving integration

Published on 11 Oct 2018 - 4:53

score 259 · Answer 9 · 2026-03-25 09:46:52

259

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Theorem about projections and direct sums

Published on 25 Mar 2026 - 9:46

score 96 · Answer 10 · 2018-10-13 20:50:46

96

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Show this representation of $\mathfrak{sl}_2(\mathbb C)$ is completely reducible

Published on 13 Oct 2018 - 20:50

score 64 · Answer 11 · 2026-03-25 07:42:10

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summation properties of three subspaces?

Published on 25 Mar 2026 - 7:42

score 38 · Answer 12 · 2018-10-14 18:25:58

38

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Proof that $fV=fV_1\bigoplus \cdots \bigoplus fV_k$

Published on 14 Oct 2018 - 18:25

score 70 · Answer 13 · 2018-10-15 01:52:40

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If $U =\{ f \in P_3| f(-1)=f(1)=0\}$ Then is $P_3 = U⊕P_2$?

Published on 15 Oct 2018 - 1:52

score 29 · Answer 14 · 2026-03-25 20:42:09

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How do I interpret all factors have a common finite exponent in this context?

Published on 25 Mar 2026 - 20:42

score 862 · Answer 15 · 2018-10-21 15:01:28

862

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How to find the sum of $n(n+1)$, $(2n-1)$ and $(3n-2)$

Published on 21 Oct 2018 - 15:01

List Question

What is the difference between an infinite set of 1 dollar bills and an infinite set of 20 dollar bills?

Linear algebra: Direct sum decomposition

Is $\Bbb Q$ a decomposable module over $\Bbb Z$ or not?

If $M = P \oplus Q$ then is $M\cap N = (P \cap N) \oplus (Q \cap N)$

Let $M=\Bbb Z^2$ . If $N$ and $P$ internal direct summands of $M$ , then does it follow that $N+P$ is also an internal direct summand of $M$

Addition and Direct Sums of Subspaces

Existence of subspace

Direct Sum involving integration

Theorem about projections and direct sums

Show this representation of $\mathfrak{sl}_2(\mathbb C)$ is completely reducible

summation properties of three subspaces?

Proof that $fV=fV_1\bigoplus \cdots \bigoplus fV_k$

If $U =\{ f \in P_3| f(-1)=f(1)=0\}$ Then is $P_3 = U⊕P_2$?

How do I interpret all factors have a common finite exponent in this context?

How to find the sum of $n(n+1)$, $(2n-1)$ and $(3n-2)$

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