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2024 04 16 Meeting
affeldt-aist edited this page Jun 5, 2024
·
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Participants: Pierre, Takafumi, Yves, Quentin, Reynald, Zachary
- announcements:
-
new documentation
- report issues here: https://github.com/affeldt-aist/coq2html
- TODO(rei): check about links to
isMeasurableType
and constructs generated by HB - pierre: use coq2html for MathComp?
- better do it during the next months to benefit from support by Imai
- next release 1.2.0 planned for May 15, prepare PRs accordingly
-
new documentation
-
separating pointed out of topological
- related issue: splitting
topology.v
- goal: do not make pointed a requirement for topology
- this is a breaking change
- technical problem: mixins must be outside of the modules
- zachary:
- original plan: add everything outside of the module
- pierre: what about putting the non-pointed structure outside of the module?
- add the new one with a long name
- deprecate the old one
- change the names back a few versions later Pbm: requires to change all the lemmas
- zachary: ring has the same problem
- the current change is an exercise towards solving the same problem with ring
- Problems:
- Hints do not work anymore (
simple apply
), needs to make the patterns more explicit - about the factories:
- we want them to take the unpointed structures
- to make it backward compatible we need to provide two versions with new notations for legacy/new modes
- Hints do not work anymore (
- cyril:
- what about imposing long names and explicit exports and provide as notations with a deprecation warning for the old behavior?
- zachary: for a factory which
nbhs
should I use? we need two factories (the second one should call the unpointed one) - use the NES feature of HB instead of reexport by hand (https://github.com/LPCIC/coq-elpi/blob/master/apps/NES/examples/usage_NES.v)
- zachary: wants to access the fields of mixin before declaring the structure, HB.reexport does not export notations by default
- related issue: splitting
-
new proof of Zorn's lemma
- related PR: Zorn's variant
- move the relation from
Prop
codomain tobool
?- needs to put
Prop
tobool
functions everywhere - zachary: btw, quotients cause the same problem, requiring
pselect
's - georges wants to use
bool
maximally, predicates inProp
and sets inbool
(in this view definitions depend less oneqType
andchoiceType
) - cyril prefers to have
Prop
everywhere andbool
on demand with a meta function that translates fromProp
tobool
, this is implemented with a type class in Lean. We should use an HB structure, see alsoPeq
inboolp.v
- as a rule of thumb: use
Prop
rather thanbool
-
wochoice.v
is supposed to come beforeclassical_sets.v
, should be merged beforeboolp.v
-> having duplicates may be tolerable - problems are
upper_bound
,lower_bound
,maximum_of
,nonempty
because of quantifiers - universe consistency problem likely comes from
Prop
/bool
conversions - zachary: introduce a
Prop
-like typeclass with fieldto_bool
,from_bool
?Prop
is an instance, as well asbool
- cyril: not sure of the implications (what is
pred
going to look like?)
- needs to put
-
bernoulli, binomial, and uniform probability measures
- implement generic semiring operations on measures?
- see addition and multiplication for functions
- pierre: keep only
bernoulliT
and get rid ofbernoulli
? - cyril:
- suspects that
bernoulliT
could cause problem of inference - if
p
is out of bound, make it equal to1
- the definition of
bernoulli
would become a theorem - TODO(rei): to update the PR
- suspects that
- implement generic semiring operations on measures?
- PR triaging:
-
lemmas about
total_variation
- TODO(zachary): review
-
moving
mulr_rev
-
mulr_rev
puts a new alias on the converse of the ring - shortcut: reimplement
rev_mulr
withoutmulr_rev
- try to inline the definition
-
-
minor generalizations
- TODO(zachary): review
-
lemmas about
- issue triaging:
- naming
notin_set
issue 1190-
notin_set
->notin_setE
-
- about
uniform_bigO.v
issue 1141- add to the Mmakefile
- rename
misc
toshowcase
- distinct makefile for it
- TODO: add an
all_analysis.v
file
- naming