fix(book.md): add types.arrow to 2.9

closes #976
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Floris van Doorn 2016-01-26 12:59:01 -05:00 committed by Leonardo de Moura
parent 810ee9759c
commit 29c84aad19

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@ -60,9 +60,9 @@ Chapter 2: Homotopy type theory
- 2.6 (Cartesian product types): [types.prod](types/prod.hlean)
- 2.7 (Σ-types): [types.sigma](types/sigma.hlean)
- 2.8 (The unit type): special case of [init.trunc](init/trunc.hlean)
- 2.9 (Π-types and the function extensionality axiom): [init.funext](init/funext.hlean) and [types.pi](types/pi.hlean)
- 2.9 (Π-types and the function extensionality axiom): [init.funext](init/funext.hlean), [types.pi](types/pi.hlean) and [types.arrow](types/arrow.hlean)
- 2.10 (Universes and the univalence axiom): [init.ua](init/ua.hlean)
- 2.11 (Identity type): [init.equiv](init/equiv.hlean) (ap is equivalence), [types.eq](types/eq.hlean) and [cubical.square](cubical/square.hlean) (characterization of pathovers in equality types)
- 2.11 (Identity type): [init.equiv](init/equiv.hlean) (ap is an equivalence), [types.eq](types/eq.hlean) and [cubical.square](cubical/square.hlean) (characterization of pathovers in equality types)
- 2.12 (Coproducts): [types.sum](types/sum.hlean)
- 2.13 (Natural numbers): [types.nat.hott](types/nat/hott.hlean)
- 2.14 (Example: equality of structures): algebra formalized in [algebra.group](algebra/group.hlean).