diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/changelog/11-infrastructure-and-dependencies/11742-zarith+core.rst | 8 | ||||
| -rw-r--r-- | doc/sphinx/addendum/micromega.rst | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/doc/changelog/11-infrastructure-and-dependencies/11742-zarith+core.rst b/doc/changelog/11-infrastructure-and-dependencies/11742-zarith+core.rst new file mode 100644 index 0000000000..3b34e11ff8 --- /dev/null +++ b/doc/changelog/11-infrastructure-and-dependencies/11742-zarith+core.rst @@ -0,0 +1,8 @@ +- **Changed:** + Coq's core system now uses the `zarith <https://github.com/ocaml/Zarith>`_ + library, based on GNU's gmp instead of ``num`` which is + deprecated upstream. The custom ``bigint`` module is + not longer provided; note that the ``micromega`` still uses + ``num`` + (`#11742 <https://github.com/coq/coq/pull/11742>`_, + by Emilio Jesus Gallego Arias and Vicent Laporte). diff --git a/doc/sphinx/addendum/micromega.rst b/doc/sphinx/addendum/micromega.rst index c01e6a5aa6..d7e4c9c804 100644 --- a/doc/sphinx/addendum/micromega.rst +++ b/doc/sphinx/addendum/micromega.rst @@ -159,7 +159,7 @@ High level view of `lia` Over :math:`\mathbb{R}`, *positivstellensatz* refutations are a complete proof principle [#mayfail]_. However, this is not the case over :math:`\mathbb{Z}`. Actually, *positivstellensatz* refutations are not even sufficient to decide -linear *integer* arithmetic. The canonical example is :math:`2 * x = 1 -> \mathtt{False}` +linear *integer* arithmetic. The canonical example is :math:`2 * x = 1 \to \mathtt{False}` which is a theorem of :math:`\mathbb{Z}` but not a theorem of :math:`{\mathbb{R}}`. To remedy this weakness, the :tacn:`lia` tactic is using recursively a combination of: |