Pith Number

pith:7MCUOWW4

pith:2013:7MCUOWW476K4MZGM5EKLLKHJMB

not attested not anchored not stored refs pending

Automorphisms of the plane preserving a curve

Immanuel Stampfli, J\'er\'emy Blanc

arxiv:1304.2549 v2 · 2013-04-09 · 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{7MCUOWW476K4MZGM5EKLLKHJMB}

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	2026-05-18T00:57:05.152382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb05475adcff95c664cce914b5a8e9606d4158f8f2f7a176014ea07c76863132

Aliases

arxiv: 1304.2549 · arxiv_version: 1304.2549v2 · doi: 10.48550/arxiv.1304.2549 · pith_short_12: 7MCUOWW476K4 · pith_short_16: 7MCUOWW476K4MZGM · pith_short_8: 7MCUOWW4

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/7MCUOWW476K4MZGM5EKLLKHJMB \
  | 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: fb05475adcff95c664cce914b5a8e9606d4158f8f2f7a176014ea07c76863132

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffd2fba808c85500f2307fd65548663d87dd955a547f2ee30b29ae87dc86f439",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-04-09T12:23:27Z",
    "title_canon_sha256": "2a1228a6b0c1e62edb6443d6161a0db84d61d0bafb6581a4502e8b25647cff9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2549",
    "kind": "arxiv",
    "version": 2
  }
}