Pith Number

pith:A4Q2NZBP

pith:2011:A4Q2NZBPRFHUB6YHTBTMLZR7U5

not attested not anchored not stored refs pending

A Worst-case Bound for Topology Computation of Algebraic Curves

Michael Kerber, Michael Sagraloff

arxiv:1104.1510 v1 · 2011-04-08 · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4Q2NZBPRFHUB6YHTBTMLZR7U5}

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	2026-05-18T02:22:10.368488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0721a6e42f894f40fb079866c5e63fa7443e3db4608e353588e9dbbda4f6cbfc

Aliases

arxiv: 1104.1510 · arxiv_version: 1104.1510v1 · doi: 10.48550/arxiv.1104.1510 · pith_short_12: A4Q2NZBPRFHU · pith_short_16: A4Q2NZBPRFHUB6YH · pith_short_8: A4Q2NZBP

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/A4Q2NZBPRFHUB6YHTBTMLZR7U5 \
  | 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: 0721a6e42f894f40fb079866c5e63fa7443e3db4608e353588e9dbbda4f6cbfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3308ea5ceebbb3afbbacb14e459f004e3f990bff3d3297baeb5f3ea9274391a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2011-04-08T07:56:51Z",
    "title_canon_sha256": "b077138ea8f4789347248555d88ed0fa3e8a38e24c2fde383fff040d4ae147fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1510",
    "kind": "arxiv",
    "version": 1
  }
}