Pith Number

pith:2M5DCHUC

pith:2013:2M5DCHUCYGTRNYCK5J6MH4KVWL

not attested not anchored not stored refs pending

Solution to an isotopism question concerning rank 2 semifields

Giuseppe Marino, Michel Lavrauw, Olga Polverino, Rocco Trombetti

arxiv:1305.4342 v1 · 2013-05-19 · 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{2M5DCHUCYGTRNYCK5J6MH4KVWL}

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	2026-05-18T03:25:24.039006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d33a311e82c1a716e04aea7cc3f155b2ce55f9995ebdda36714f0ce29cfd1bee

Aliases

arxiv: 1305.4342 · arxiv_version: 1305.4342v1 · doi: 10.48550/arxiv.1305.4342 · pith_short_12: 2M5DCHUCYGTR · pith_short_16: 2M5DCHUCYGTRNYCK · pith_short_8: 2M5DCHUC

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/2M5DCHUCYGTRNYCK5J6MH4KVWL \
  | 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: d33a311e82c1a716e04aea7cc3f155b2ce55f9995ebdda36714f0ce29cfd1bee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f8320ead6fa8be185b89f4a9d39c07267f524006214bf0b2f9b3c5b31c377a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-05-19T09:19:55Z",
    "title_canon_sha256": "bc9534f85af741f43dedc712a41a2ca32e1420a0436a8e3537d3c003f7a74826"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4342",
    "kind": "arxiv",
    "version": 1
  }
}