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23 Feb 2009: 1. Which of the following propositions are tautologies, that is, are true for all valuations?(a) (A B) (B A). ... b) A A.(c) (A B) (B A). (d) (A B) ((A B) A).

28 Jan 2009: α β γ = π A(). 4. A. A. B. B. ... A Bu. C. v. C. B. α. Corollary 2.8 Spherical Cosine Rule II.

26 Oct 2009: B}. Show thatif A and B are both closed and one of them is bounded then A B is closed. ... b) Is the space R[0, 1] of integrable functions on [0, 1], equipped with the uniform norm, complete?

20 Feb 2009: Another line ncrosses at a (movable) point B and a fixed angle β. ... cos α =cosh b cosh c cosh acosh2 b 1. cosh2 c 1.

29 Oct 2009: B}. Show thatif A and B are both closed and one of them is bounded then A B is closed. ... b) Is the space R[0, 1] of integrable functions on [0, 1], equipped with the uniform norm, complete?

20 Feb 2009: Another line ncrosses at a (movable) point B and a fixed angle β. ... cos α =cosh b cosh c cosh acosh2 b 1. cosh2 c 1.

22 Jan 2009: 5) Prove the statement (b) of problem (4) above by completing the following. ... 6) Let f : B B be a continuous map from the open disc B = {(x, y) R2 : x2 y2 < 1} into it-self.

21 Oct 2009: 5) Prove the statement (b) of problem (4) above by completing the following. ... 6) Let f : B B be a continuous map from the open disc B = {(x, y) R2 : x2 y2 < 1} into it-self.

21 Jan 2009: B[p] := {bp : b B}. in B provided that B is reduced.Let t be a positive integer. ... Hence ι is surjective. Because b. p B1 for all b B, we see that ι is injective.In fact, it is easy to see that the inverse of ι is

9 Oct 2009: and B = (b : T B B), the function space [A, B] is given by T -algebra structure on the. ... r(x) = {b B | a M x. arb }. It is immediate that r preserves directed sups, that is, it is Scott continuous.