Pith Number

pith:SBPFQU5B

pith:2011:SBPFQU5BMQSG7W3AHRO52LF2NT

not attested not anchored not stored refs pending

Kontsevich's noncommutative numerical motives

Goncalo Tabuada, Matilde Marcolli

arxiv:1108.3785 v1 · 2011-08-18 · math.KT · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SBPFQU5BMQSG7W3AHRO52LF2NT}

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	2026-05-17T23:53:19.277605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

905e5853a164246fdb603c5ddd2cba6cf1053f68acc0843bc1c6749477c6b914

Aliases

arxiv: 1108.3785 · arxiv_version: 1108.3785v1 · doi: 10.48550/arxiv.1108.3785 · pith_short_12: SBPFQU5BMQSG · pith_short_16: SBPFQU5BMQSG7W3A · pith_short_8: SBPFQU5B

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/SBPFQU5BMQSG7W3AHRO52LF2NT \
  | 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: 905e5853a164246fdb603c5ddd2cba6cf1053f68acc0843bc1c6749477c6b914

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df21b5b075772f0f420ece094f7e08bfa59213840a73b6a74a0d51a073fbaa47",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2011-08-18T16:10:10Z",
    "title_canon_sha256": "ddaa46eaa294d7ec5e38e44c85a95411dafe27d807c1c011a091d13013bd39d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3785",
    "kind": "arxiv",
    "version": 1
  }
}