2017-07-01 13:47:06 +00:00
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/-
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Copyright (c) 2017 Egbert Rijke. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Egbert Rijke
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-/
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/-
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The goal of this file is to extend the library of pointed types and pointed maps to support the library of prespectra
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-/
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import types.pointed2
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open eq pointed
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definition psquare_of_phtpy_top {A B C D : Type*} {ftop : A →* B} {fbot : C →* D} {fleft : A →* C} {fright : B →* D} {ftop' : A →* B} (phtpy : ftop ~* ftop') (psq : psquare ftop' fbot fleft fright) : psquare ftop fbot fleft fright :=
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begin
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induction phtpy using phomotopy_rec_on_idp, exact psq,
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end
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definition psquare_of_phtpy_bot {A B C D : Type*} {ftop : A →* B} {fbot : C →* D} {fleft : A →* C} {fright : B →* D} {fbot' : C →* D} (phtpy : fbot ~* fbot') (psq : psquare ftop fbot' fleft fright) : psquare ftop fbot fleft fright :=
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begin
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induction phtpy using phomotopy_rec_on_idp, exact psq,
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end
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definition psquare_of_phtpy_left {A B C D : Type*} {ftop : A →* B} {fbot : C →* D} {fleft : A →* C} {fright : B →* D} {fleft' : A →* C} (phtpy : fleft ~* fleft') (psq : psquare ftop fbot fleft fright) : psquare ftop fbot fleft' fright :=
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begin
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induction phtpy using phomotopy_rec_on_idp, exact psq,
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end
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definition psquare_of_phtpy_right {A B C D : Type*} {ftop : A →* B} {fbot : C →* D} {fleft : A →* C} {fright : B →* D} {fright' : B →* D} (phtpy : fright ~* fright') (psq : psquare ftop fbot fleft fright) : psquare ftop fbot fleft fright' :=
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begin
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induction phtpy using phomotopy_rec_on_idp, exact psq,
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end
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definition psquare_of_pid_top_bot {A B : Type*} {fleft : A →* B} {fright : A →* B} (phtpy : fright ~* fleft) : psquare (pid A) (pid B) fleft fright :=
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psquare_of_phomotopy ((pcompose_pid fright) ⬝* phtpy ⬝* (pid_pcompose fleft)⁻¹*)
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print psquare_of_pid_top_bot
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--λ phtpy, psquare_of_phomotopy ((pid_pcompose fleft) ⬝* phtpy ⬝* ((pcompose_pid fright)⁻¹*))
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definition psquare_of_pid_left_right {A B : Type*} {ftop : A →* B} {fbot : A →* B} (phtpy : ftop ~* fbot) : psquare ftop fbot (pid A) (pid B) :=
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psquare_of_phomotopy ((pid_pcompose ftop) ⬝* phtpy ⬝* ((pcompose_pid fbot)⁻¹*))
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print psquare_of_pid_left_right
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2017-07-01 14:15:29 +00:00
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definition psquare_hcompose {A B C D E F : Type*} {ftop : A →* B} {fbot : D →* E} {fleft : A →* D} {fright : B →* E} {gtop : B →* C} {gbot : E →* F} {gright : C →* F} (psq_left : psquare ftop fbot fleft fright) (psq_right : psquare gtop gbot fright gright) : psquare (gtop ∘* ftop) (gbot ∘* fbot) fleft gright :=
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begin
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fapply psquare_of_phomotopy,
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refine (passoc gright gtop ftop)⁻¹* ⬝* _ ⬝* (passoc gbot fbot fleft)⁻¹*,
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refine (pwhisker_right ftop psq_right) ⬝* (passoc gbot fright ftop) ⬝* _,
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exact (pwhisker_left gbot psq_left),
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end
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