Pith Number

pith:HAGYVSIN

pith:2010:HAGYVSINHNMBA6I22MG4YVVKHG

not attested not anchored not stored refs pending

On the equivalence problem for manifolds of indefinite metrics

Ognian Kassabov

arxiv:1008.5083 v1 · 2010-08-30 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HAGYVSINHNMBA6I22MG4YVVKHG}

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	2026-05-18T04:41:37.162206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

380d8ac90d3b5810791ad30dcc56aa39b801fe5627284401b7b80d6defac0afa

Aliases

arxiv: 1008.5083 · arxiv_version: 1008.5083v1 · doi: 10.48550/arxiv.1008.5083 · pith_short_12: HAGYVSINHNMB · pith_short_16: HAGYVSINHNMBA6I2 · pith_short_8: HAGYVSIN

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/HAGYVSINHNMBA6I22MG4YVVKHG \
  | 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: 380d8ac90d3b5810791ad30dcc56aa39b801fe5627284401b7b80d6defac0afa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e768dbcdbe9463598abc36ddfd3f1a6b406402acba17d69c9301caaf8dd1af24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-08-30T13:55:08Z",
    "title_canon_sha256": "a4c34bc19eae38a98abc157482abb0dcc4e644ee6adac8750b5b7723fccb2537"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.5083",
    "kind": "arxiv",
    "version": 1
  }
}