chharvey
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 5 Is a closed set minus its limit points open? 3 $A=\{A,\emptyset\}$ and axiom of regularity 3 Why should you never divide both sides by a variable when solving an equation? 2 Antisymmetric Relations 2 Does maximum or supremum of an infinite set exit?

### Reputation (1,063)

 +10 For every real number $a$ there exists a sequence $r_n$ of rational numbers such that $r_n$ approaches $a$. +40 Can this puzzle be solved without brute force? +10 Antisymmetric Relations +5 Prove: bounded derivative if and only if uniform continuity

### Questions (28)

 14 Prove: bounded derivative if and only if uniform continuity 13 Are the Real numbers really Complete? [closed] 8 Can this puzzle be solved without brute force? 8 Fibonacci numbers that are powers? 6 name this function

### Tags (49)

 10 real-analysis × 16 2 continuity × 4 4 axioms × 3 2 abstract-algebra × 3 3 elementary-set-theory × 3 2 arithmetic-functions 2 calculus × 9 2 discrete-mathematics 2 algebra-precalculus × 4 2 relations

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