I tried to prove some lemmas about Implicative Lattice and decided to use function meet-monotone from Order.Lattice.MeetSemilattice. I found this function in manually downloaded standard lib, but when I'm trying to use it in my code the syntax checker says that there's no such a function.
Code:
\import Order.LinearOrder
\import Order.PartialOrder
\import Order.Lattice
\import Paths
\open MeetSemilattice
...
meet-monotone <=-reflexive join-left
Error: [ERROR] t1.ard:27:14: Cannot resolve reference 'meet-monotone'
I checked Intellij IDEA plugin lib and there's truly no such a function. At the same time, there's one from manually downloaded lib from Arend website. I use 2021.1 Intellij IDEA Ultimate and my project generated by the plugin has langVersion: 1.6.0.1 in arend.yaml.
