Pith Number

pith:7HMCRSL2

pith:2011:7HMCRSL27ADRMBV34GJYXALKP7

not attested not anchored not stored refs pending

On piecewise isomorphism of some varieties

A. Melle-Hernandez, I. Luengo, S.M. Gusein-Zade

arxiv:1103.1562 v2 · 2011-03-08 · 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{7HMCRSL27ADRMBV34GJYXALKP7}

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	2026-05-18T04:27:06.091367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9d828c97af8071606bbe1938b816a7fdc597837988f028a8c501f313e4f1769

Aliases

arxiv: 1103.1562 · arxiv_version: 1103.1562v2 · doi: 10.48550/arxiv.1103.1562 · pith_short_12: 7HMCRSL27ADR · pith_short_16: 7HMCRSL27ADRMBV3 · pith_short_8: 7HMCRSL2

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/7HMCRSL27ADRMBV34GJYXALKP7 \
  | 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: f9d828c97af8071606bbe1938b816a7fdc597837988f028a8c501f313e4f1769

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06db10dd0b58a2e90420bbb85344ed5e1e45f5c9d794e6fe735dbbe641ec4645",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-03-08T15:38:54Z",
    "title_canon_sha256": "106cbfa638eb7d87b2b5a6d228532e9b62b34c002cadb11f8126316f8772d79c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1562",
    "kind": "arxiv",
    "version": 2
  }
}