Theoretic

Opinionated tool to typeset theorems, lemmas and such

Example Usage:

  #import "@preview/theoretic:0.4.0"
  #import theoretic.presets.basic: * // this will automatically load predefined styled environments
  #show ref: theoretic.show-ref      // this is necessary for references to theorems to work

  // Example Usage:
  #theorem(<label>)[Title][Body]
  #theorem(label: <label>, title: [Title], [Body]) // this is equivalent to the above

  #proposition(variant: "important")[This proposition has a frame around it!]
  #proof[...]
  #example[...]
  // ..etc

Features: Overview

• It is easy to create single-use variants of environments, as all parameters can be changed on use.
  (All configuration is achieved via parameters on the theorem function, the presets are only preset pramaters.)
  • There are multiple preset styles available, and it should be easy to add your own.
• Automatic QED placement!
  • Even if the proof ends with a list or a block equation, the QED will be perfectly aligned.
  • Nested proofs are supported.
  • You can add a suffix (e.g. ∎) to any environment.
• Flexible References via specific supplements. E.g. a reference without the title using @label[-]; or one with only title and number using @label[!!].
• Any theorem can be restated.
• Automatic numbering & ability to use anything as a number. (E.g. "Proposition F")
• Custom outlines: Outline for headings and/or theorems.
  • Filter for specific kinds of theorem to create e.g. a list of definitions.
  • Optionally sorted alphabetically!
  • Theorems can have a different title for outlines and can even have multiple entries in a sorted outline.
• Exercise solutions

Please see the PDF manual for more information, e.g. on how to define your own styles and environments.

Manual

Full Manual →

Preset styles

Feedback

Do you have questions or need help? I may be able to help you in the Typst forum, feel free to @nleanba to get my attention.

Have you encountered a bug? Please report it as an issue in my github repository.
(You are also welcome to add feature requests there, but I give no guarantees of implementing them.)

Has this package been useful to you? I am always happy when someone gives me a sticker star⭐