Pith Number

pith:5SNXCSGH

pith:2018:5SNXCSGHO6KN5GC5ZKL43HMPPC

not attested not anchored not stored refs pending

Arc closures and the local isomorphism problem

Devlin Mallory

arxiv:1811.12577 v2 · 2018-11-30 · math.AG · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5SNXCSGHO6KN5GC5ZKL43HMPPC}

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	2026-05-17T23:45:44.688135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec9b7148c77794de985dca97cd9d8f7893ecbd0d4316b030520b4e4e60c7c212

Aliases

arxiv: 1811.12577 · arxiv_version: 1811.12577v2 · doi: 10.48550/arxiv.1811.12577 · pith_short_12: 5SNXCSGHO6KN · pith_short_16: 5SNXCSGHO6KN5GC5 · pith_short_8: 5SNXCSGH

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/5SNXCSGHO6KN5GC5ZKL43HMPPC \
  | 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: ec9b7148c77794de985dca97cd9d8f7893ecbd0d4316b030520b4e4e60c7c212

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d49c8032839557a379806fb851cc159d47636a0971ae4be0aa6ffd82a475f878",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-11-30T02:04:09Z",
    "title_canon_sha256": "94de1c23de0a0ff086c5267718968c6e03af979ba419a07c9ed26db7837561a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.12577",
    "kind": "arxiv",
    "version": 2
  }
}