Pith Number

pith:WCDHM7GA

pith:2015:WCDHM7GAGKI5XTOWNMG6VWBDEU

not attested not anchored not stored refs pending

Witt's theorem for noncommutative conics

A. Nyman

arxiv:1503.04341 v3 · 2015-03-14 · math.AG · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WCDHM7GAGKI5XTOWNMG6VWBDEU}

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	2026-05-18T02:09:54.116300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b086767cc03291dbcdd66b0dead823250c91d1c6b880ca97fff2f1f8a4ed4722

Aliases

arxiv: 1503.04341 · arxiv_version: 1503.04341v3 · doi: 10.48550/arxiv.1503.04341 · pith_short_12: WCDHM7GAGKI5 · pith_short_16: WCDHM7GAGKI5XTOW · pith_short_8: WCDHM7GA

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/WCDHM7GAGKI5XTOWNMG6VWBDEU \
  | 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: b086767cc03291dbcdd66b0dead823250c91d1c6b880ca97fff2f1f8a4ed4722

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe67f52c97de09e4cd8fa5675671d951c9f964126124d7663dc0704752343fa8",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-03-14T20:10:47Z",
    "title_canon_sha256": "409b17678aec47abfe3b773b55ce85cef9785c0e6b3bf0fd984f273966244f05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04341",
    "kind": "arxiv",
    "version": 3
  }
}