1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 include "sets/categories2.ma".
18 interpretation "unary morphism comprehension with no proof" 'comprehension T P =
19 (mk_unary_morphism T ? P ?).
20 interpretation "unary morphism1 comprehension with no proof" 'comprehension T P =
21 (mk_unary_morphism1 T ? P ?).
23 notation > "hvbox({ ident i ∈ s | term 19 p | by })" with precedence 90
24 for @{ 'comprehension_by $s (λ${ident i}. $p) $by}.
25 notation < "hvbox({ ident i ∈ s | term 19 p })" with precedence 90
26 for @{ 'comprehension_by $s (λ${ident i}:$_. $p) $by}.
28 interpretation "unary morphism comprehension with proof" 'comprehension_by s \eta.f p =
29 (mk_unary_morphism s ? f p).
30 interpretation "unary morphism1 comprehension with proof" 'comprehension_by s \eta.f p =
31 (mk_unary_morphism1 s ? f p).
34 (* per il set-indexing vedere capitolo BPTools (foundational tools), Sect. 0.3.4 complete
35 lattices, Definizione 0.9 *)
36 (* USARE L'ESISTENZIALE DEBOLE *)
37 nrecord OAlgebra : Type[2] := {
39 oa_leq : unary_morphism1 oa_P (unary_morphism1_setoid1 oa_P CPROP); (*CSC: dovrebbe essere CProp bug refiner*)
40 oa_overlap: unary_morphism1 oa_P (unary_morphism1_setoid1 oa_P CPROP);
41 binary_meet: unary_morphism1 oa_P (unary_morphism1_setoid1 oa_P oa_P);
42 (*CSC: oa_join: ∀I:setoid.unary_morphism1 (setoid1_of_setoid … I ⇒ oa_P) oa_P;*)
45 oa_leq_refl: ∀a:oa_P. oa_leq a a;
46 oa_leq_antisym: ∀a,b:oa_P.oa_leq a b → oa_leq b a → a = b;
47 oa_leq_trans: ∀a,b,c:oa_P.oa_leq a b → oa_leq b c → oa_leq a c;
48 oa_overlap_sym: ∀a,b:oa_P.oa_overlap a b → oa_overlap b a;
49 (*CSC: oa_join_sup: ∀I:setoid.∀p_i:I ⇒ oa_P.∀p:oa_P.oa_leq (oa_join I p_i) p = (∀i:I.oa_leq (p_i i) p);*)
50 oa_zero_bot: ∀p:oa_P.oa_leq oa_zero p;
51 oa_one_top: ∀p:oa_P.oa_leq p oa_one;
52 oa_overlap_preservers_meet: ∀p,q:oa_P.oa_overlap p q → oa_overlap p (binary_meet p q);
54 ∀I:SET.∀p.∀q:I ⇒ oa_P.
55 oa_overlap p (oa_join I q) = (∃i:I.oa_overlap p (q i));*)
57 1) enum non e' il nome giusto perche' non e' suriettiva
58 2) manca (vedere altro capitolo) la "suriettivita'" come immagine di insiemi di oa_base
59 oa_enum : ums oa_base oa_P;
60 oa_density: ∀p,q.(∀i.oa_overlap p (oa_enum i) → oa_overlap q (oa_enum i)) → oa_leq p q
63 ∀p,q.(∀r.oa_overlap p r → oa_overlap q r) → oa_leq p q
66 interpretation "o-algebra leq" 'leq a b = (fun11 ?? (fun11 ?? (oa_leq ?) a) b).
68 notation "hovbox(a mpadded width -150% (>)< b)" non associative with precedence 45
69 for @{ 'overlap $a $b}.
70 interpretation "o-algebra overlap" 'overlap a b = (fun11 ?? (fun11 ?? (oa_overlap ?) a) b).
72 notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (∧) \below (\emsp) \nbsp term 90 p)"
73 non associative with precedence 55 for @{ 'oa_meet $p }.
74 notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (∧) \below (ident i ∈ I) break term 90 p)"
75 non associative with precedence 55 for @{ 'oa_meet_mk (λ${ident i}:$I.$p) }.
77 (*notation > "hovbox(∧ f)" non associative with precedence 65
79 interpretation "o-algebra meet" 'oa_meet f =
80 (fun12 ?? (oa_meet ??) f).
81 interpretation "o-algebra meet with explicit function" 'oa_meet_mk f =
82 (fun12 ?? (oa_meet ??) (mk_unary_morphism ?? f ?)).
84 notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (∨) \below (\emsp) \nbsp term 90 p)"
85 non associative with precedence 55 for @{ 'oa_join $p }.
86 notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (∨) \below (ident i ∈ I) break term 90 p)"
87 non associative with precedence 55 for @{ 'oa_join_mk (λ${ident i}:$I.$p) }.
90 notation > "hovbox(∨ f)" non associative with precedence 65
92 interpretation "o-algebra join" 'oa_join f =
93 (fun12 ?? (oa_join ??) f).
94 interpretation "o-algebra join with explicit function" 'oa_join_mk f =
95 (fun12 ?? (oa_join ??) (mk_unary_morphism ?? f ?)).
97 (*definition binary_meet : ∀O:OAlgebra. binary_morphism1 O O O.
100 apply (∧ { x ∈ BOOL | match x with [ true ⇒ p | false ⇒ q ] | IF_THEN_ELSE_p ? p q });
101 | intros; lapply (prop12 ? O (oa_meet O BOOL));
102 [2: apply ({ x ∈ BOOL | match x with [ true ⇒ a | false ⇒ b ] | IF_THEN_ELSE_p ? a b });
103 |3: apply ({ x ∈ BOOL | match x with [ true ⇒ a' | false ⇒ b' ] | IF_THEN_ELSE_p ? a' b' });
105 intro x; simplify; cases x; simplify; assumption;]
108 interpretation "o-algebra binary meet" 'and a b =
109 (fun11 ?? (fun11 ?? (binary_meet ?) a) b).
112 prefer coercion Type1_OF_OAlgebra.
114 definition binary_join : ∀O:OAlgebra. binary_morphism1 O O O.
117 apply (∨ { x ∈ BOOL | match x with [ true ⇒ p | false ⇒ q ] | IF_THEN_ELSE_p ? p q });
118 | intros; lapply (prop12 ? O (oa_join O BOOL));
119 [2: apply ({ x ∈ BOOL | match x with [ true ⇒ a | false ⇒ b ] | IF_THEN_ELSE_p ? a b });
120 |3: apply ({ x ∈ BOOL | match x with [ true ⇒ a' | false ⇒ b' ] | IF_THEN_ELSE_p ? a' b' });
122 intro x; simplify; cases x; simplify; assumption;]
125 interpretation "o-algebra binary join" 'or a b =
126 (fun21 ??? (binary_join ?) a b).
129 lemma oa_overlap_preservers_meet: ∀O:OAlgebra.∀p,q:O.p >< q → p >< (p ∧ q).
130 (* next change to avoid universe inconsistency *)
131 change in ⊢ (?→%→%→?) with (Type1_OF_OAlgebra O);
132 intros; lapply (oa_overlap_preserves_meet_ O p q f);
133 lapply (prop21 O O CPROP (oa_overlap O) p p ? (p ∧ q) # ?);
134 [3: apply (if ?? (Hletin1)); apply Hletin;|skip] apply refl1;
137 notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (∨) \below (\emsp) \nbsp term 90 p)"
138 non associative with precedence 49 for @{ 'oa_join $p }.
139 notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (∨) \below (ident i ∈ I) break term 90 p)"
140 non associative with precedence 49 for @{ 'oa_join_mk (λ${ident i}:$I.$p) }.
141 notation < "hovbox(a ∨ b)" left associative with precedence 49
142 for @{ 'oa_join_mk (λ${ident i}:$_.match $i with [ true ⇒ $a | false ⇒ $b ]) }.
144 notation > "hovbox(∨ f)" non associative with precedence 64
145 for @{ 'oa_join $f }.
146 notation > "hovbox(a ∨ b)" left associative with precedence 49
147 for @{ 'oa_join (mk_unary_morphism BOOL ? (λx__:bool.match x__ with [ true ⇒ $a | false ⇒ $b ]) (IF_THEN_ELSE_p ? $a $b)) }.
149 (*interpretation "o-algebra join" 'oa_join f =
150 (fun12 ?? (oa_join ??) f).
151 interpretation "o-algebra join with explicit function" 'oa_join_mk f =
152 (fun12 ?? (oa_join ??) (mk_unary_morphism ?? f ?)).
154 nrecord ORelation (P,Q : OAlgebra) : Type[1] ≝ {
156 or_f_minus_star : P ⇒ Q;
159 or_prop1 : ∀p,q. (or_f p ≤ q) = (p ≤ or_f_star q);
160 or_prop2 : ∀p,q. (or_f_minus p ≤ q) = (p ≤ or_f_minus_star q);
161 or_prop3 : ∀p,q. (or_f p >< q) = (p >< or_f_minus q)
164 notation "r \sup *" non associative with precedence 90 for @{'OR_f_star $r}.
165 notation > "r *" non associative with precedence 90 for @{'OR_f_star $r}.
167 notation "r \sup (⎻* )" non associative with precedence 90 for @{'OR_f_minus_star $r}.
168 notation > "r⎻*" non associative with precedence 90 for @{'OR_f_minus_star $r}.
170 notation "r \sup ⎻" non associative with precedence 90 for @{'OR_f_minus $r}.
171 notation > "r⎻" non associative with precedence 90 for @{'OR_f_minus $r}.
173 interpretation "o-relation f⎻*" 'OR_f_minus_star r = (or_f_minus_star ? ? r).
174 interpretation "o-relation f⎻" 'OR_f_minus r = (or_f_minus ? ? r).
175 interpretation "o-relation f*" 'OR_f_star r = (or_f_star ? ? r).
178 ndefinition ORelation_setoid : OAlgebra → OAlgebra → setoid1.
179 #P; #Q; @ (ORelation P Q); @
180 [ napply (λp,q.p = q)
182 | #x; #y; napply sym1
183 | #x; #y; #z; napply trans1 ]
186 unification hint 0 ≔ P, Q ;
187 R ≟ (ORelation_setoid P Q)
188 (* -------------------------- *) ⊢
189 carr1 R ≡ ORelation P Q.
191 ndefinition or_f_morphism1: ∀P,Q:OAlgebra.unary_morphism1 (ORelation_setoid P Q)
192 (unary_morphism1_setoid1 P Q).
195 | #a; #a'; #e; nassumption]
198 unification hint 0 ≔ P, Q, r;
199 R ≟ (mk_unary_morphism1 … (or_f …) (prop11 … (or_f_morphism1 …)))
200 (* ------------------------ *) ⊢
201 fun11 … R r ≡ or_f P Q r.
203 nlemma ORelation_eq_respects_leq_or_f_minus_:
204 ∀P,Q:OAlgebra.∀r,r':ORelation P Q.
205 r=r' → ∀x. r⎻ x ≤ r'⎻ x.
206 #P; #Q; #a; #a'; #e; #x;
207 napply oa_density; #r; #H;
208 napply oa_overlap_sym;
209 napply (. (or_prop3 … a' …)^-1); (*CSC: why a'? *)
213 napply (. (or_prop3 …));
214 napply oa_overlap_sym;
218 nlemma ORelation_eq2:
219 ∀P,Q:OAlgebra.∀r,r':ORelation P Q.
221 #P; #Q; #a; #a'; #e; #x; #x'; #Hx; napply (.= †Hx);
222 napply oa_leq_antisym; napply ORelation_eq_respects_leq_or_f_minus_
223 [ napply e | napply (e^-1)]
226 ndefinition or_f_minus_morphism1: ∀P,Q:OAlgebra.unary_morphism1 (ORelation_setoid P Q)
227 (unary_morphism1_setoid1 Q P).
230 | napply ORelation_eq2]
233 unification hint 0 ≔ P, Q, r;
234 R ≟ (mk_unary_morphism1 … (or_f_minus …) (prop11 … (or_f_minus_morphism1 …)))
235 (* ------------------------ *) ⊢
236 fun11 … R r ≡ or_f_minus P Q r.
238 naxiom daemon : False.
240 nlemma ORelation_eq_respects_leq_or_f_star_:
241 ∀P,Q:OAlgebra.∀r,r':ORelation P Q.
242 r=r' → ∀x. r* x ≤ r'* x.
243 #P; #Q; #a; #a'; #e; #x; (*CSC: una schifezza *)
246 ngeneralize in match (. (or_prop1 P Q a' (a* x) x)^-1) in ⊢ %; #H; napply H;
247 nchange with (or_f P Q a' (a* x) ≤ x);
249 [##2: napply (a (a* x))
250 | ngeneralize in match (a* x);
251 nchange with (or_f P Q a' = or_f P Q a);
252 napply (.= †e^-1); napply #]
253 napply (. (or_prop1 …));
254 napply oa_leq_refl.*)
257 nlemma ORelation_eq3:
258 ∀P,Q:OAlgebra.∀r,r':ORelation P Q.
260 #P; #Q; #a; #a'; #e; #x; #x'; #Hx; napply (.= †Hx);
261 napply oa_leq_antisym; napply ORelation_eq_respects_leq_or_f_star_
262 [ napply e | napply (e^-1)]
265 ndefinition or_f_star_morphism1: ∀P,Q:OAlgebra.unary_morphism1 (ORelation_setoid P Q)
266 (unary_morphism1_setoid1 Q P).
269 | napply ORelation_eq3]
272 unification hint 0 ≔ P, Q, r;
273 R ≟ (mk_unary_morphism1 … (or_f_star …) (prop11 … (or_f_star_morphism1 …)))
274 (* ------------------------ *) ⊢
275 fun11 … R r ≡ or_f_star P Q r.
277 nlemma ORelation_eq_respects_leq_or_f_minus_star_:
278 ∀P,Q:OAlgebra.∀r,r':ORelation P Q.
279 r=r' → ∀x. r⎻* x ≤ r'⎻* x.
280 #P; #Q; #a; #a'; #e; #x; (*CSC: una schifezza *)
282 ngeneralize in match (. (or_prop2 P Q a' (a⎻* x) x)^-1) in ⊢ %; #H; napply H;
283 nchange with (or_f_minus P Q a' (a⎻* x) ≤ x);
285 [##2: napply (a⎻ (a⎻* x))
286 | ngeneralize in match (a⎻* x);
287 nchange with (a'⎻ = a⎻);
288 napply (.= †e^-1); napply #]
289 napply (. (or_prop2 …));
290 napply oa_leq_refl.*)
293 nlemma ORelation_eq4:
294 ∀P,Q:OAlgebra.∀r,r':ORelation P Q.
296 #P; #Q; #a; #a'; #e; #x; #x'; #Hx; napply (.= †Hx);
297 napply oa_leq_antisym; napply ORelation_eq_respects_leq_or_f_minus_star_
298 [ napply e | napply (e^-1)]
301 ndefinition or_f_minus_star_morphism1:
302 ∀P,Q:OAlgebra.unary_morphism1 (ORelation_setoid P Q) (unary_morphism1_setoid1 P Q).
304 [ napply or_f_minus_star
305 | napply ORelation_eq4]
309 unification hint 0 ≔ P, Q, r;
310 R ≟ (mk_unary_morphism1 … (or_f_minus_star …) (prop11 … (or_f_minus_star_morphism1 …)))
311 (* ------------------------ *) ⊢
312 fun11 … R r ≡ or_f_minus_star P Q r.
314 (* qui la notazione non va *)
316 nlemma leq_to_eq_join: ∀S:OAlgebra.∀p,q:S. p ≤ q → q = (binary_join ? p q).
318 apply oa_leq_antisym;
319 [ apply oa_density; intros;
320 apply oa_overlap_sym;
321 unfold binary_join; simplify;
322 apply (. (oa_join_split : ?));
323 exists; [ apply false ]
324 apply oa_overlap_sym;
326 | unfold binary_join; simplify;
327 apply (. (oa_join_sup : ?)); intro;
328 cases i; whd in ⊢ (? ? ? ? ? % ?);
329 [ assumption | apply oa_leq_refl ]]
332 nlemma overlap_monotone_left: ∀S:OAlgebra.∀p,q,r:S. p ≤ q → p >< r → q >< r.
333 #S; #p; #q; #r; #H1; #H2;
334 apply (. (leq_to_eq_join : ?)‡#);
337 | apply oa_overlap_sym;
338 unfold binary_join; simplify;
339 apply (. (oa_join_split : ?));
340 exists [ apply true ]
341 apply oa_overlap_sym;
345 (* Part of proposition 9.9 *)
346 nlemma f_minus_image_monotone: ∀S,T.∀R:ORelation S T.∀p,q. p ≤ q → R⎻ p ≤ R⎻ q.
347 #S; #T; #R; #p; #q; #H;
348 napply (. (or_prop2 …));
349 napply oa_leq_trans; ##[##2: napply H; ##| ##skip |
350 napply (. (or_prop2 … q …)^ -1);(*CSC: why q?*) napply oa_leq_refl]
353 (* Part of proposition 9.9 *)
354 nlemma f_minus_star_image_monotone: ∀S,T.∀R:ORelation S T.∀p,q. p ≤ q → R⎻* p ≤ R⎻* q.
355 #S; #T; #R; #p; #q; #H;
356 napply (. (or_prop2 … (R⎻* p) q)^ -1); (*CSC: why ?*)
357 napply oa_leq_trans; ##[##3: napply H; ##| ##skip | napply (. (or_prop2 …)); napply oa_leq_refl]
360 (* Part of proposition 9.9 *)
361 nlemma f_image_monotone: ∀S,T.∀R:ORelation S T.∀p,q. p ≤ q → R p ≤ R q.
362 #S; #T; #R; #p; #q; #H;
363 napply (. (or_prop1 …));
364 napply oa_leq_trans; ##[##2: napply H; ##| ##skip | napply (. (or_prop1 … q …)^ -1); napply oa_leq_refl]
367 (* Part of proposition 9.9 *)
368 nlemma f_star_image_monotone: ∀S,T.∀R:ORelation S T.∀p,q. p ≤ q → R* p ≤ R* q.
369 #S; #T; #R; #p; #q; #H;
370 napply (. (or_prop1 … (R* p) q)^ -1);
371 napply oa_leq_trans; ##[##3: napply H; ##| ##skip | napply (. (or_prop1 …)); napply oa_leq_refl]
374 nlemma lemma_10_2_a: ∀S,T.∀R:ORelation S T.∀p. p ≤ R⎻* (R⎻ p).
376 napply (. (or_prop2 … p …)^-1);
380 nlemma lemma_10_2_b: ∀S,T.∀R:ORelation S T.∀p. R⎻ (R⎻* p) ≤ p.
382 napply (. (or_prop2 …));
386 nlemma lemma_10_2_c: ∀S,T.∀R:ORelation S T.∀p. p ≤ R* (R p).
388 napply (. (or_prop1 … p …)^-1);
392 nlemma lemma_10_2_d: ∀S,T.∀R:ORelation S T.∀p. R (R* p) ≤ p.
394 napply (. (or_prop1 …));
398 nlemma lemma_10_3_a: ∀S,T.∀R:ORelation S T.∀p. R⎻ (R⎻* (R⎻ p)) = R⎻ p.
399 #S; #T; #R; #p; napply oa_leq_antisym
400 [ napply lemma_10_2_b
401 | napply f_minus_image_monotone;
402 napply lemma_10_2_a ]
405 nlemma lemma_10_3_b: ∀S,T.∀R:ORelation S T.∀p. R* (R (R* p)) = R* p.
406 #S; #T; #R; #p; napply oa_leq_antisym
407 [ napply f_star_image_monotone;
408 napply (lemma_10_2_d ?? R p)
409 | napply lemma_10_2_c ]
412 nlemma lemma_10_3_c: ∀S,T.∀R:ORelation S T.∀p. R (R* (R p)) = R p.
413 #S; #T; #R; #p; napply oa_leq_antisym
414 [ napply lemma_10_2_d
415 | napply f_image_monotone;
416 napply (lemma_10_2_c ?? R p) ]
419 nlemma lemma_10_3_d: ∀S,T.∀R:ORelation S T.∀p. R⎻* (R⎻ (R⎻* p)) = R⎻* p.
420 #S; #T; #R; #p; napply oa_leq_antisym
421 [ napply f_minus_star_image_monotone;
422 napply (lemma_10_2_b ?? R p)
423 | napply lemma_10_2_a ]
426 nlemma lemma_10_4_a: ∀S,T.∀R:ORelation S T.∀p. R⎻* (R⎻ (R⎻* (R⎻ p))) = R⎻* (R⎻ p).
427 #S; #T; #R; #p; napply (†(lemma_10_3_a …)).
430 nlemma lemma_10_4_b: ∀S,T.∀R:ORelation S T.∀p. R (R* (R (R* p))) = R (R* p).
431 #S; #T; #R; #p; napply (†(lemma_10_3_b …));
434 nlemma oa_overlap_sym': ∀o:OAlgebra.∀U,V:o. (U >< V) = (V >< U).
435 #o; #U; #V; @; #H; napply oa_overlap_sym; nassumption.
438 (******************* CATEGORIES **********************)
440 ninductive one : Type[0] ≝ unit : one.
442 ndefinition force : ∀S:Type[2]. S → ∀T:Type[2]. T → one → Type[2] ≝
443 λS,s,T,t,lock. match lock with [ unit => S ].
445 ndefinition enrich_as :
446 ∀S:Type[2].∀s:S.∀T:Type[2].∀t:T.∀lock:one.force S s T t lock ≝
447 λS,s,T,t,lock. match lock return λlock.match lock with [ unit ⇒ S ]
450 ncoercion enrich_as : ∀S:Type[2].∀s:S.∀T:Type[2].∀t:T.∀lock:one. force S s T t lock
451 ≝ enrich_as on t: ? to force ? ? ? ? ?.
453 (* does not work here
454 nlemma foo : ∀A,B,C:setoid1.∀f:B ⇒ C.∀g:A ⇒ B. unary_morphism1 A C.
455 #A; #B; #C; #f; #g; napply(f \circ g).
458 (* This precise hint does not leave spurious metavariables *)
459 unification hint 0 ≔ A,B,C : setoid1, f:B ⇒ C, g: A ⇒ B;
461 (* --------------------------------------------------------------- *) ⊢
462 (unary_morphism1 A C)
464 (force (unary_morphism1 A C) (comp1_unary_morphisms A B C f g)
465 (carr1 A → carr1 C) (composition1 A B C f g) lock)
468 (* This uniform hint opens spurious metavariables
469 unification hint 0 ≔ A,B,C : setoid1, f:B ⇒ C, g: A ⇒ B, X;
471 (* --------------------------------------------------------------- *) ⊢
472 (unary_morphism1 A C)
474 (force (unary_morphism1 A C) X (carr1 A → carr1 C) (fun11 … X) lock)
478 nlemma foo : ∀A,B,C:setoid1.∀f:B ⇒ C.∀g:A ⇒ B. unary_morphism1 A C.
479 #A; #B; #C; #f; #g; napply(f ∘ g).
484 ndefinition uffa: ∀A,B. ∀U: unary_morphism1 A B. (A → B) → CProp[0].
485 #A;#B;#_;#_; napply True.
487 ndefinition mk_uffa: ∀A,B.∀U: unary_morphism1 A B. ∀f: (A → B). uffa A B U f.
488 #A; #B; #U; #f; napply I.
491 ndefinition coerc_to_unary_morphism1:
492 ∀A,B. ∀U: unary_morphism1 A B. uffa A B U (fun11 … U) → unary_morphism1 A B.
493 #A; #B; #U; #_; nassumption.
496 ncheck (λA,B,C,f,g.coerc_to_unary_morphism1 ??? (mk_uffa ??? (composition1 A B C f g))).
498 ndefinition ORelation_composition : ∀P,Q,R.
499 unary_morphism1 (ORelation_setoid P Q)
500 (unary_morphism1_setoid1 (ORelation_setoid Q R) (ORelation_setoid P R)).
501 #P; #Q; #R; napply mk_binary_morphism1
503 [ napply (G ∘ F) (* napply (comp1_unary_morphisms … G F) (*CSC: was (G ∘ F);*) *)
504 | napply (G⎻* ∘ F⎻* ) (* napply (comp1_unary_morphisms … G⎻* F⎻* ) (*CSC: was (G⎻* ∘ F⎻* );*)*)
505 | napply (comp1_unary_morphisms … F* G* ) (*CSC: was (F* ∘ G* );*)
506 | napply (comp1_unary_morphisms … F⎻ G⎻) (*CSC: was (F⎻ ∘ G⎻);*)
507 | #p; #q; nnormalize;
508 napply (.= (or_prop1 … G …)); (*CSC: it used to understand without G *)
510 | #p; #q; nnormalize;
511 napply (.= (or_prop2 … F …));
513 | #p; #q; nnormalize;
514 napply (.= (or_prop3 … G …));
521 ndefinition OA : category2.
524 | intros; apply (ORelation_setoid o o1);
527 |5,6,7:intros; apply refl1;]
528 | apply ORelation_composition;
529 | intros (P Q R S F G H); split;
530 [ change with (H⎻* ∘ G⎻* ∘ F⎻* = H⎻* ∘ (G⎻* ∘ F⎻* ));
531 apply (comp_assoc2 ????? (F⎻* ) (G⎻* ) (H⎻* ));
532 | apply ((comp_assoc2 ????? (H⎻) (G⎻) (F⎻))^-1);
533 | apply ((comp_assoc2 ????? F G H)^-1);
534 | apply ((comp_assoc2 ????? H* G* F* ));]
535 | intros; split; unfold ORelation_composition; simplify; apply id_neutral_left2;
536 | intros; split; unfold ORelation_composition; simplify; apply id_neutral_right2;]
539 definition OAlgebra_of_objs2_OA: objs2 OA → OAlgebra ≝ λx.x.
540 coercion OAlgebra_of_objs2_OA.
542 definition ORelation_setoid_of_arrows2_OA:
543 ∀P,Q. arrows2 OA P Q → ORelation_setoid P Q ≝ λP,Q,c.c.
544 coercion ORelation_setoid_of_arrows2_OA.
546 prefer coercion Type_OF_objs2.
548 (* alias symbol "eq" = "setoid1 eq". *)