Pith Number

pith:767D5GUD

pith:2019:767D5GUDMXUINEH2YYFHG56OCP

not attested not anchored not stored refs pending

On Extensions of Partial Isomorphisms

Mahmood Etedadialiabadi, Su Gao

arxiv:1908.02965 v2 · 2019-08-08 · math.LO · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{767D5GUDMXUINEH2YYFHG56OCP}

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	2026-07-05T01:20:47.546295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffbe3e9a8365e88690fac60a7377ce13d38bce94744fe6189dea7d51606bbeb6

Aliases

arxiv: 1908.02965 · arxiv_version: 1908.02965v2 · doi: 10.48550/arxiv.1908.02965 · pith_short_12: 767D5GUDMXUI · pith_short_16: 767D5GUDMXUINEH2 · pith_short_8: 767D5GUD

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/767D5GUDMXUINEH2YYFHG56OCP \
  | 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: ffbe3e9a8365e88690fac60a7377ce13d38bce94744fe6189dea7d51606bbeb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cbdd3e05dc7cd15df8a4a47119c9b1b51920c810fb726f9fd7c81018f4e6835",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-08-08T08:13:28Z",
    "title_canon_sha256": "1b8253e9f12bcb82b4bb10cece018e4d0bc5be5543afb3675416b570aa2fc8d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02965",
    "kind": "arxiv",
    "version": 2
  }
}