Pith Number

pith:MBTHBD3D

pith:2016:MBTHBD3DWNR5ROJKV7K63TWQAP

not attested not anchored not stored refs pending

Real Clifford algebras and quadratic forms over ${\mathbb F}_2$: two old problems become one

Valentin Ovsienko

arxiv:1601.07664 v3 · 2016-01-28 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MBTHBD3DWNR5ROJKV7K63TWQAP}

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	2026-05-18T01:19:43.799570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6066708f63b363d8b92aafd5edced003c1b94e232f7836362880079b3f7b5ceb

Aliases

arxiv: 1601.07664 · arxiv_version: 1601.07664v3 · doi: 10.48550/arxiv.1601.07664 · pith_short_12: MBTHBD3DWNR5 · pith_short_16: MBTHBD3DWNR5ROJK · pith_short_8: MBTHBD3D

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/MBTHBD3DWNR5ROJKV7K63TWQAP \
  | 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: 6066708f63b363d8b92aafd5edced003c1b94e232f7836362880079b3f7b5ceb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30bfe47de02fa7ab5db360557bedff91263e1eb9adfe1e9ddd7e1aa2abe0cb39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2016-01-28T06:49:17Z",
    "title_canon_sha256": "c9afbd6d6fd49cf5807c60ce2375625fdc9a31e73110cef2f33962b0b71fa320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.07664",
    "kind": "arxiv",
    "version": 3
  }
}