Pith Number

pith:NAY47QRQ

pith:2015:NAY47QRQNC3QQULKWYUHZBNC5E

not attested not anchored not stored refs pending

The Nori fundamental gerbe of tame stacks

Indranil Biswas, Niels Borne

arxiv:1502.07023 v3 · 2015-02-25 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NAY47QRQNC3QQULKWYUHZBNC5E}

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	2026-05-18T01:33:33.792215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6831cfc23068b708516ab6287c85a2e93ff16fbd0e4da19778ff39eada51acd6

Aliases

arxiv: 1502.07023 · arxiv_version: 1502.07023v3 · doi: 10.48550/arxiv.1502.07023 · pith_short_12: NAY47QRQNC3Q · pith_short_16: NAY47QRQNC3QQULK · pith_short_8: NAY47QRQ

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/NAY47QRQNC3QQULKWYUHZBNC5E \
  | 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: 6831cfc23068b708516ab6287c85a2e93ff16fbd0e4da19778ff39eada51acd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42dfc415335fa5a5094b291eee984c2aafa6a20c38fa654e3056c48f7282c3e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-25T01:04:01Z",
    "title_canon_sha256": "a5fa0895a126985a6783c63ce536f986d2466af25d9d5a106e301c68f7164051"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07023",
    "kind": "arxiv",
    "version": 3
  }
}