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Sequential limits #839

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Oct 16, 2023
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85dac52
towers
fredrik-bakke Oct 13, 2023
1177563
universal property of limits of towers
fredrik-bakke Oct 14, 2023
7d83c9c
patch file generation `MAlonzo`
fredrik-bakke Oct 14, 2023
aec13d6
more additions `universal-property-limits-of-towers`
fredrik-bakke Oct 14, 2023
93bfbe7
rename `canonical-pullback` -> `standard-pullback`
fredrik-bakke Oct 14, 2023
efef160
touch-up `foundation-core.pullbacks`
fredrik-bakke Oct 14, 2023
f75ba9b
a little touch-up `foundation.pullbacks`
fredrik-bakke Oct 14, 2023
81ead26
more fixes
fredrik-bakke Oct 14, 2023
06843c4
shifting towers
fredrik-bakke Oct 14, 2023
386eb78
commuting squares of homotopies
fredrik-bakke Oct 14, 2023
04996cd
maps of towers
fredrik-bakke Oct 14, 2023
2fc0216
standard limits of towers
fredrik-bakke Oct 14, 2023
1fdae05
transfinite composition of maps
fredrik-bakke Oct 14, 2023
feec07c
remove unused imports
fredrik-bakke Oct 14, 2023
ed26dd8
Merge branch 'master' into tower
fredrik-bakke Oct 14, 2023
315a084
mistaken renaming
fredrik-bakke Oct 14, 2023
62dccbd
fix links
fredrik-bakke Oct 14, 2023
1e64fb5
characterize equality of towers, and fix some namings
fredrik-bakke Oct 14, 2023
d88916b
revert `MAlonzo` patch
fredrik-bakke Oct 14, 2023
391238d
`tower`s and `sequential-limit`s
fredrik-bakke Oct 14, 2023
52dc593
`comp-hom-tower`
fredrik-bakke Oct 14, 2023
a42c703
Merge branch 'master' into tower
fredrik-bakke Oct 14, 2023
8062e4d
Characterization of equality of maps of towers
fredrik-bakke Oct 14, 2023
76ef045
cleanup
fredrik-bakke Oct 14, 2023
a5efd8c
self-review 1
fredrik-bakke Oct 14, 2023
947e5ad
`coherence-htpy-triangle-maps`
fredrik-bakke Oct 14, 2023
f2e0c80
more small fixes
fredrik-bakke Oct 14, 2023
a5bb9df
a typo
fredrik-bakke Oct 14, 2023
031dfba
review 1
fredrik-bakke Oct 15, 2023
65b54a0
post-pre-commit
fredrik-bakke Oct 15, 2023
48583fd
remove duplicate def
fredrik-bakke Oct 15, 2023
c199b44
idea `universal-property-sequential-limits`
fredrik-bakke Oct 15, 2023
470e3a4
typo
fredrik-bakke Oct 15, 2023
2e7c60c
refactor functoriality
fredrik-bakke Oct 15, 2023
1dc1d35
Precomposing cones over X with a map
fredrik-bakke Oct 15, 2023
fff7c89
The property of being a ...
fredrik-bakke Oct 15, 2023
a04c54d
table of pullback files
fredrik-bakke Oct 15, 2023
547517a
table of fibers of maps files
fredrik-bakke Oct 15, 2023
6f1400c
table of sequential limits files
fredrik-bakke Oct 15, 2023
43ed912
reorder table entries
fredrik-bakke Oct 15, 2023
e7a47b1
remove unused imports and revert fibers of maps of finite types renaming
fredrik-bakke Oct 15, 2023
04a739d
fix link
fredrik-bakke Oct 15, 2023
0d5a8b0
Update tables/sequential-limits.md
fredrik-bakke Oct 15, 2023
972dace
The universal property of X _at a universe level_
fredrik-bakke Oct 15, 2023
3bb70bc
move map-universal-property-*
fredrik-bakke Oct 15, 2023
eede4dc
fix boldface
fredrik-bakke Oct 15, 2023
6400bce
comments
fredrik-bakke Oct 15, 2023
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6 changes: 3 additions & 3 deletions src/foundation/cones-over-cospans.lagda.md
Original file line number Diff line number Diff line change
Expand Up @@ -27,9 +27,9 @@ open import foundation-core.whiskering-homotopies

## Idea

A **cone** on a [cospan](foundation.cospans.md) `A --f--> X <--g-- B` with
domain `C` is a triple `(p,q,H)` consisting of a map `p : C → A`, a map
`q : C → B`, and a homotopy `H` witnessing that the square
A **cone on a [cospan](foundation.cospans.md)** `A -f-> X <-g- B` with domain
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`C` is a triple `(p, q, H)` consisting of a map `p : C → A`, a map `q : C → B`,
and a homotopy `H` witnessing that the square

```text
q
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2 changes: 1 addition & 1 deletion src/foundation/cones-over-towers.lagda.md
Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,7 @@ open import foundation-core.whiskering-homotopies

## Idea

A **cone** over a [tower](foundation.towers.md) `A` with domain `X` is a
A **cone over a [tower](foundation.towers.md) `A` with domain `X`** is a
[sequence](foundation.dependent-sequences.md) of functions from `X` into the
sequence of types of `A` such that the triangles

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2 changes: 1 addition & 1 deletion src/foundation/dependent-towers.lagda.md
Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@ pr2 (const-dependent-tower A B) n _ = map-tower B n

### Sections of a dependent tower

A **section of a dependent tower** `(B , g)` over `(A , f)` is a choice of
A **section of a dependent tower `(B , g)` over `(A , f)`** is a choice of
sections `hₙ` of each `Bₙ` that vary naturally over `A`, by which we mean that
the diagrams

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4 changes: 2 additions & 2 deletions src/foundation/equivalences-towers.lagda.md
Original file line number Diff line number Diff line change
Expand Up @@ -34,9 +34,9 @@ An **equivalence of towers** `A ≃ B` is a commuting diagram of the form

```text
⋯ ----> Aₙ₊₁ ----> Aₙ ----> ⋯ ----> A₁ ----> A₀
| | | | | |
| | | | |
⋯ | | ⋯ | |
v v v v v v
v v v v v
⋯ ----> Bₙ₊₁ ----> Bₙ ----> ⋯ ----> B₁ ----> B₀.
```

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4 changes: 2 additions & 2 deletions src/foundation/morphisms-towers.lagda.md
Original file line number Diff line number Diff line change
Expand Up @@ -36,9 +36,9 @@ A **morphism of towers** `A → B` is a commuting diagram of the form

```text
⋯ ----> Aₙ₊₁ ----> Aₙ ----> ⋯ ----> A₁ ----> A₀
| | | | | |
| | | | |
⋯ | | ⋯ | |
v v v v v v
v v v v v
⋯ ----> Bₙ₊₁ ----> Bₙ ----> ⋯ ----> B₁ ----> B₀.
```

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2 changes: 1 addition & 1 deletion src/foundation/towers.lagda.md
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ open import foundation.universe-levels

## Idea

A **tower** of types `f` is a [sequence](foundation.sequences.md) of types
A **tower of types** `f` is a [sequence](foundation.sequences.md) of types
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together with maps between every two consecutive types

```text
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