Pith Number

pith:4B6OBJ2D

pith:2010:4B6OBJ2D6MJPUQBOYIJG3ABC3D

not attested not anchored not stored refs pending

Functorial Data Migration

David I. Spivak

arxiv:1009.1166 v4 · 2010-09-06 · cs.DB · math.CT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4B6OBJ2D6MJPUQBOYIJG3ABC3D}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

3 papers in Pith

A category-theoretic approach to modeling John Cage's Silent piece

Kleisli semantics and hypergraph composition for Greimasian narrative programs

Presenting Neural Networks via Coherent Functors

Receipt and verification

First computed	2026-05-18T03:34:46.568420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e07ce0a743f312fa402ec2126d8022d8ed88f79f2a49f9c4ee8c80c4451d64cb

Aliases

arxiv: 1009.1166 · arxiv_version: 1009.1166v4 · doi: 10.48550/arxiv.1009.1166 · pith_short_12: 4B6OBJ2D6MJP · pith_short_16: 4B6OBJ2D6MJPUQBO · pith_short_8: 4B6OBJ2D

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4B6OBJ2D6MJPUQBOYIJG3ABC3D \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e07ce0a743f312fa402ec2126d8022d8ed88f79f2a49f9c4ee8c80c4451d64cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7643ad39c215ca54eabb2c23aa343b58308103bd05fe0c514fd502c6bc649b1",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2010-09-06T21:05:23Z",
    "title_canon_sha256": "d4633dace5c8a223d8b3e809b29fee206b2b375f67c22c892ae927bc910d4625"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1166",
    "kind": "arxiv",
    "version": 4
  }
}