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23 May 2024: B; u A; v B⟧ A B" by (lemma insert_lepoll_cong: assumes "A B" "b B" shows "insert a Ab B" proof - obtain f where f: "inj_on f A" ... where "inj_on f A" "f A B" using assms by (then obtain b where b: "b B" "b f A" by auto show?

23 May 2024: apply (fast intro!: FiniteFun.intros) done lemma FiniteFun_subset: "⟦c<=b; b A-||>B⟧ c A-||>B" by (blast intro: FiniteFun_subset_lemma) ( Some further results by Sidi O. ... f A->B f A-||>B" apply (erule Fin.induct) apply (simp add:apply (case_tac "a

23 May 2024: case by (auto intro!: exI[of _ "min a b"]) next case UN then show? ... Q b b < a" and P: "eventually P at_top" shows "filterlim fa)" proof - from P obtain x where x: "y.

30 Apr 2024: Alternatively, you can book a hotel or B&B room via the Visit Cambridge website or visit the Cambridge Rooms site that includes accommodation at other Colleges.

23 May 2024: a = x) = a" by blast subsection‹Conditional Terms: ‹if-then-else›› lemma if_true [simp]: "(a else b) = a" by (unfoldlemma if_false [simp]: "(a else b) = b" by (unfoldNever use ... lemma misc_simps [simp]: "A = A" "AA" "AAAAA" "b,A)) = bA)" "({b})

23 May 2024: thesis. qed lemma sigma_sets_UNION: "countable B (b. b B bX A) BX A" using from_nat_into [of B] range_from_nat_into [of B] sigma_sets.Union [of ... a A aM B" assumes B: "b. b B bM A" shows "sigma_sets M AM B" proof (introfix a assume "aM A" fromshow "aM B

23 May 2024: lemma SigmaD1: "(a, b)A B a A" by blast lemma SigmaD2: "(a, b)A B b B a" by blast lemma SigmaE2: "(a, b)A B (a A b B ... j). (j, i)) (A B) = B A" by (auto simp add: set_eq_iff) lemma image_split_eq_Sigma: "(λx.

23 May 2024: b T j (i b) = b" "b. b T i b S" assumes eq: "a. ... b T - T' j (i b) = b" "b. b T - T' i b S - S'" assumes nn: "a.

23 May 2024: a = "aλb. (a b / (b b)). R. ... a b / (b b)). R.

23 May 2024: finally have "b<": "b r (a f b) f c". fromhave "c<": "c r (a f b) f c". ... also fromhave "… r a f …". finally have "b<": "b r a f (b f c)".