Pith Number

pith:C23LEHXD

pith:2011:C23LEHXDOIMICZFVR7PKTTOLJV

not attested not anchored not stored refs pending

Amoebas of genus at most one

Thorsten Theobald, Timo de Wolff

arxiv:1108.2456 v2 · 2011-08-11 · 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{C23LEHXDOIMICZFVR7PKTTOLJV}

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	2026-05-18T03:27:23.296967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16b6b21ee372188164b58fdea9cdcb4d6ca65544ad9339eec549fc76b5f371fe

Aliases

arxiv: 1108.2456 · arxiv_version: 1108.2456v2 · doi: 10.48550/arxiv.1108.2456 · pith_short_12: C23LEHXDOIMI · pith_short_16: C23LEHXDOIMICZFV · pith_short_8: C23LEHXD

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/C23LEHXDOIMICZFVR7PKTTOLJV \
  | 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: 16b6b21ee372188164b58fdea9cdcb4d6ca65544ad9339eec549fc76b5f371fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c06a674f50ad239b2c823a55853640220d476418df37f3fb88701e623fc50a87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-08-11T16:39:14Z",
    "title_canon_sha256": "61b052a7ce7a68faa2ef25ad16dd41a0bc869b637a4af64f6170c588bc915ed8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2456",
    "kind": "arxiv",
    "version": 2
  }
}