Pith Number

pith:OONNPYMU

pith:2015:OONNPYMUHGWSZMTMYLLSOTXYSU

not attested not anchored not stored refs pending

Spherical quadrilaterals with three non-integer angles

Alexandre Eremenko, Andrei Gabrielov, Vitaly Tarasov

arxiv:1504.02928 v1 · 2015-04-12 · math.CV · math-ph · math.MG · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OONNPYMUHGWSZMTMYLLSOTXYSU}

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	2026-05-18T01:04:00.378545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

739ad7e19439ad2cb26cc2d7274ef8951df09c1aaaf10a91ea96af84335b4aae

Aliases

arxiv: 1504.02928 · arxiv_version: 1504.02928v1 · doi: 10.48550/arxiv.1504.02928 · pith_short_12: OONNPYMUHGWS · pith_short_16: OONNPYMUHGWSZMTM · pith_short_8: OONNPYMU

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/OONNPYMUHGWSZMTMYLLSOTXYSU \
  | 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: 739ad7e19439ad2cb26cc2d7274ef8951df09c1aaaf10a91ea96af84335b4aae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e50e38cf342a32fe935361b2dbbbc232b79c41973be980f5bcec3593799b29ca",
    "cross_cats_sorted": [
      "math-ph",
      "math.MG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2015-04-12T02:52:42Z",
    "title_canon_sha256": "3f9ba08297b06b5e695324d01ec65860cfd02b9fe3933856b8dac6959bc5f93e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02928",
    "kind": "arxiv",
    "version": 1
  }
}