Pith Number

pith:FO5FRHHD

pith:2019:FO5FRHHDYLP2OC5S5MKLSDPNGK

not attested not anchored not stored refs pending

Identity types and weak factorization systems in Cauchy complete categories

Paige Randall North

arxiv:1901.03567 v1 · 2019-01-11 · math.CT · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FO5FRHHDYLP2OC5S5MKLSDPNGK}

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.

Receipt and verification

First computed	2026-05-17T23:44:37.801883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bba589ce3c2dfa70bb2eb14b90ded3286734ef2a9d5adfc33d137166c0feab3

Aliases

arxiv: 1901.03567 · arxiv_version: 1901.03567v1 · doi: 10.48550/arxiv.1901.03567 · pith_short_12: FO5FRHHDYLP2 · pith_short_16: FO5FRHHDYLP2OC5S · pith_short_8: FO5FRHHD

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/FO5FRHHDYLP2OC5S5MKLSDPNGK \
  | 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: 2bba589ce3c2dfa70bb2eb14b90ded3286734ef2a9d5adfc33d137166c0feab3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4a5845f840cb1f405f0a404d01b463c57a6591ee40f72c0c32ad9dea9d25e72",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2019-01-11T12:13:31Z",
    "title_canon_sha256": "b498b649437f6d3004ceaf68714d5290cc33a586898b432c861055d04dd89b68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03567",
    "kind": "arxiv",
    "version": 1
  }
}