Pith Number

pith:V5I22X55

pith:2013:V5I22X55LPVYRYVG2FWAN5I7MK

not attested not anchored not stored refs pending

The ubiquity of Psi-matroids

Johannes Carmesin, Nathan Bowler

arxiv:1304.6973 v1 · 2013-04-25 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V5I22X55LPVYRYVG2FWAN5I7MK}

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	2026-05-18T03:27:10.676913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af51ad5fbd5beb88e2a6d16c06f51f62b029d9d109a50b9cbde1a48e52caed28

Aliases

arxiv: 1304.6973 · arxiv_version: 1304.6973v1 · doi: 10.48550/arxiv.1304.6973 · pith_short_12: V5I22X55LPVY · pith_short_16: V5I22X55LPVYRYVG · pith_short_8: V5I22X55

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/V5I22X55LPVYRYVG2FWAN5I7MK \
  | 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: af51ad5fbd5beb88e2a6d16c06f51f62b029d9d109a50b9cbde1a48e52caed28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8aa808ec04d0e45b8386613725d035428a797275209c4d43164eb03e993cb16f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-04-25T18:04:47Z",
    "title_canon_sha256": "57a47e7f7c63647040043f94562f5e84614d3d49e235891e38ea45dbdeccc574"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6973",
    "kind": "arxiv",
    "version": 1
  }
}