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jcreedcmu.github.io

Occasional blogging

jcreedcmu.github.io ↗RSS feed ↗95 posts

Latest posts

A Small Modal Type Theory for Internal Parametricity

More Tiny Thoughts

One More Type in the Tiny Type Theory

A Simpler Proof-Irrelevant Tiny Object

A Proof-Irrelevant Tiny Object

More Graph Geometry

recipe

Graph Geometry

Thinking About Opetopes

More Thoughts on Braids

Another Parametricity Construction

Typed Geometry

Parametricity via Parametricity

An Imperfect Graph Representation

Parametricity and Comma Categories

Constructing Parametricity Gel Type as Pushout

An Almost Slice Category

An Exciting Internalized Parametricity Gotcha

A Postulate for Internalized Parametricity

Thoughts About a Directed Interval

The Pentagonal Icositetrahedron as a 24-sided Die

A Funny Definition of Groups

Maps and Knots

Three Lists in One

A Heuristic Argument for the Central Limit Theorem

Defining Fillets

Naive Topology Intuitions and Logic

Parametricity and Substructural Types

A Probability Distribution Puzzle

Type Combinators for Interactive Forms

A Signal-Processing Cheatsheet

Set-Theoretic Geometry

A Picture of Sheaves

What Type is a Deck of Cards?

Linear Logic and Algebraic Geometry

Cache Types, Part 2

Stretchable Edges in Graphs

Constructing the Cotangent Function

How to Invent Hyperbolic Geometry

How to Invent Topographs

A Bernoulli Number Identity

Type Manifolds

Understanding the Hook Length Formula

Do Univalent Universes Arise from Higher Adjoints?

Attention for Type Theorists

Somewhat-Topology-Preserving Hex Map Reduction

Rigid String Diagrams

The Higher-Dimensional Graph Game

chicken sandwich

piranesi