Pith Number

pith:MRXIUH5H

pith:2021:MRXIUH5HLGM2NXCTRULTFFNDAK

not attested not anchored not stored refs pending

What is $-Q$ for a poset $Q$?

Masahiko Yoshinaga, Taiga Yoshida

arxiv:2102.00566 v1 · 2021-02-01 · math.CO · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MRXIUH5HLGM2NXCTRULTFFNDAK}

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	2026-07-05T02:11:12.986229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

646e8a1fa75999a6dc538d173295a302bb7ffc3bc5c807052c5401a36f196b38

Aliases

arxiv: 2102.00566 · arxiv_version: 2102.00566v1 · doi: 10.48550/arxiv.2102.00566 · pith_short_12: MRXIUH5HLGM2 · pith_short_16: MRXIUH5HLGM2NXCT · pith_short_8: MRXIUH5H

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/MRXIUH5HLGM2NXCTRULTFFNDAK \
  | 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: 646e8a1fa75999a6dc538d173295a302bb7ffc3bc5c807052c5401a36f196b38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e73a52f8f172b86db74e88bf6da1af0c494ff76743427f9d0c3d26ad12a82bb5",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-02-01T00:00:02Z",
    "title_canon_sha256": "cd2c0c769eaf2b25f365f87e175321fe0774a0bbc3a58baf41a1528df5064d7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.00566",
    "kind": "arxiv",
    "version": 1
  }
}