Papers, notes and proofs in one research workspace.
Oyren combines a PDF reader with AI questions, editable notes and mind maps. Lean 4 with Mathlib runs in a cloud Codespace alongside the research files.
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AI questions with the paper in view
Select text or a region in a PDF and ask AI about it. The visible page and available document text provide context for the answer. The paper stays open beside the conversation for checking the explanation against its source.
PDF reading and conversion into notes
Questions around the papers
Notes and mind maps live in the same workspace as the papers. A map can group open questions, related ideas and the next steps in a project. Its branches and connections remain editable.

Manually prepared map, captured in Oyren. This example shows a community garden project.
Proof checking with Lean 4 and Mathlib
The Lean 4 add-on launches a cloud development machine with the toolchain, Mathlib cache and editor infoview installed. Proof files can be edited and checked in the browser.
The launch controls show the required machine size and runtime cost. For a workflow that needs a GPU, reach out to us.
See the Lean 4 workspace
Plans for ongoing research
Compare plans for storage and monthly credits. PDF conversion and AI use credits; Codespace runtime is billed separately.



