Pith Number

pith:4ZY5TU2L

pith:2016:4ZY5TU2LCXIQB5THZXOVRSTSSL

not attested not anchored not stored refs pending

Non-homotopicity of the linking set of algebraic plane curves

Beno\^it Guerville-Ball\'e, Taketo Shirane

arxiv:1607.04951 v2 · 2016-07-18 · 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{4ZY5TU2LCXIQB5THZXOVRSTSSL}

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	2026-05-18T00:46:49.283866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e671d9d34b15d100f667cddd58ca7292ffac576a69ff4266ba38715ca892c744

Aliases

arxiv: 1607.04951 · arxiv_version: 1607.04951v2 · doi: 10.48550/arxiv.1607.04951 · pith_short_12: 4ZY5TU2LCXIQ · pith_short_16: 4ZY5TU2LCXIQB5TH · pith_short_8: 4ZY5TU2L

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/4ZY5TU2LCXIQB5THZXOVRSTSSL \
  | 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: e671d9d34b15d100f667cddd58ca7292ffac576a69ff4266ba38715ca892c744

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64c9e42b00cac4cbf69a811ce06e5975954b6ea7e9d06810cbf2a513ee48ff52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-07-18T05:15:31Z",
    "title_canon_sha256": "a13b3f94bf99ae739c808bf1ce9260296183ca19eaa6f69eabcc76624a7d32ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.04951",
    "kind": "arxiv",
    "version": 2
  }
}