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pberlijn

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visits member for 2 years, 1 month
seen Apr 16 at 22:48
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155 reputation
 bio website visits member for 2 years, 1 month
4 badges
 location seen Apr 16 at 22:48
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2 Questions

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5
 Group of positive rationals under multiplication not isomorphic to group of rationals
3
 Isomorphism between multiplicative R and R x integers modulo 2

155 Reputation

+25 Group of positive rationals under multiplication not isomorphic to group of rationals
+10 Business sales math
+15 Isomorphism between multiplicative R and R x integers modulo 2

1 Answer

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1
 Business sales math

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arithmetic
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group-theory × 2

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