Arend 1.6.0 released

Language updates:

Plugin updates:

  • Quick fixes for “impossible elimination” and “expected constructor” errors

API:

  • Pattern typechecker

arend-lib:

2022

New IntelliJ Arend tutorial

There is a new tutorial on interactive theorem proving with IntelliJ Arend. Check it out to learn about the features of IntelliJ Arend that speed-up theorem...

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2021

Arend 1.6.0 released

Language updates: Built-in finite types \default implementations \coerce to function types \coerce for fields and constructors \have declaration ...

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2020

Arend 1.5.0 released

Language updates: String literals, which can be used in meta code Meta resolvers, which can be used to modify the scoping rules for meta definitions \...

Arend 1.4.0 released

Language updates: Implicit lambdas. Tests directory can be used to store files with tests, examples, and other code which is not a part of the library. ...

Arend 1.3.0 released

We implemented language extensions. This can be used to implement custom operations on the abstract syntax tree which are not supported by the language. They...

The first part of our tutorial is ready

We finished the first part of our new tutorial. It covers all the basic constructions of Arend. It does not mention anything related to homotopy theory. This...

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2019

Arend 1.2.0 released

We implemented a few features related to classes and pattern matching. One of these features is pattern matching on idp : a = a, which can be used instead of...

Arend 1.1.0 released

Arend now has proof irrelevant universe of proposition and the plugin can run the typechecker automatically in background.

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