definition invert_os_relation ≝
λC:ordered_set.λU:C square → Prop.
- λx:C square. U 〈snd x,fst x〉.
+ λx:C square. U 〈\snd x,\fst x〉.
interpretation "relation invertion" 'invert a = (invert_os_relation _ a).
interpretation "relation invertion" 'invert_symbol = (invert_os_relation _).
lemma segment_square_of_ordered_set_square:
∀O:ordered_set.∀u,v:O.∀x:O square.
- fst x ∈ [u,v] → snd x ∈ [u,v] → {[u,v]} square.
-intros; split; exists; [1: apply (fst x) |3: apply (snd x)] assumption;
+ \fst x ∈ [u,v] → \snd x ∈ [u,v] → {[u,v]} square.
+intros; split; exists; [1: apply (\fst x) |3: apply (\snd x)] assumption;
qed.
coercion cic:/matita/dama/ordered_uniform/segment_square_of_ordered_set_square.con 0 2.
-alias symbol "pi1" (instance 4) = "exT fst".
-alias symbol "pi1" (instance 2) = "exT fst".
+alias symbol "pi1" (instance 4) = "exT \fst".
+alias symbol "pi1" (instance 2) = "exT \fst".
lemma ordered_set_square_of_segment_square :
∀O:ordered_set.∀u,v:O.{[u,v]} square → O square ≝
- λO:ordered_set.λu,v:O.λb:{[u,v]} square.〈fst(fst b),fst(snd b)〉.
+ λO:ordered_set.λu,v:O.λb:{[u,v]} square.〈\fst(\fst b),\fst(\snd b)〉.
coercion cic:/matita/dama/ordered_uniform/ordered_set_square_of_segment_square.con.
restriction_agreement ? l r U u →
restriction_agreement ? l r (inv U) (inv u).
intros 9; split; intro;
-[1: apply (unrestrict ????? (segment_square_of_ordered_set_square ??? 〈snd b,fst b〉 H2 H1) H H3);
-|2: apply (restrict ????? (segment_square_of_ordered_set_square ??? 〈snd b,fst b〉 H2 H1) H H3);]
+[1: apply (unrestrict ????? (segment_square_of_ordered_set_square ??? 〈\snd b,\fst b〉 H2 H1) H H3);
+|2: apply (restrict ????? (segment_square_of_ordered_set_square ??? 〈\snd b,\fst b〉 H2 H1) H H3);]
qed.
alias symbol "square" (instance 8) = "bishop set square".
lemma bs_of_ss:
∀O:ordered_set.∀u,v:O.{[u,v]} square → (bishop_set_of_ordered_set O) square ≝
- λO:ordered_set.λu,v:O.λb:{[u,v]} square.〈fst(fst b),fst(snd b)〉.
+ λO:ordered_set.λu,v:O.λb:{[u,v]} square.〈\fst(\fst b),\fst(\snd b)〉.
-notation < "x \sub \neq" left associative with precedence 91 for @{'bsss $x}.
+notation < "x \sub \neq" with precedence 91 for @{'bsss $x}.
interpretation "bs_of_ss" 'bsss x = (bs_of_ss _ _ _ x).
alias symbol "square" (instance 7) = "ordered set square".
-alias symbol "pair" (instance 4) = "dependent pair".
-alias symbol "pair" (instance 2) = "dependent pair".
lemma ss_of_bs:
∀O:ordered_set.∀u,v:O.
- ∀b:O square.fst b ∈ [u,v] → snd b ∈ [u,v] → {[u,v]} square ≝
+ ∀b:O square.\fst b ∈ [u,v] → \snd b ∈ [u,v] → {[u,v]} square ≝
λO:ordered_set.λu,v:O.
- λb:(O:bishop_set) square.λH1,H2.â\8c©â\8c©fst b,H1â\8cª,â\8c©snd b,H2â\8cª〉.
+ λb:(O:bishop_set) square.λH1,H2.â\8c©â\89ª\fst b,H1â\89«,â\89ª\snd b,H2â\89«〉.
-notation < "x \sub \nleq" left associative with precedence 91 for @{'ssbs $x}.
+notation < "x \sub \nleq" with precedence 91 for @{'ssbs $x}.
interpretation "ss_of_bs" 'ssbs x = (ss_of_bs _ _ _ x _ _).
lemma segment_ordered_uniform_space:
unfold segment_square_of_ordered_set_square;
cases b; intros; split; intro; assumption;
|2: intros 2 (x Hx); apply (restrict ?????? HuU); apply Hwu;
- cases Hx (m Hm); exists[apply (fst m)] apply Hm;]
+ cases Hx (m Hm); exists[apply (\fst m)] apply Hm;]
|4: intros (U HU x); cases HU (u Hu); cases Hu (Gu HuU); clear HU Hu;
cases (us_phi4 ?? Gu x) (Hul Hur);
split; intros;
(segment_ordered_uniform_space _ a b).
(* Lemma 3.2 *)
-alias symbol "pi1" = "exT fst".
+alias symbol "pi1" = "exT \fst".
lemma restric_uniform_convergence:
∀O:ordered_uniform_space.∀l,u:O.
∀x:{[l,u]}.
∀a:sequence {[l,u]}.
- ⌊n,fst (a n)⌋ uniform_converges (fst x) →
+ ⌊n,\fst (a n)⌋ uniform_converges (\fst x) →
a uniform_converges x.
intros 8; cases H1; cases H2; clear H2 H1;
cases (H ? H3) (m Hm); exists [apply m]; intros;