Pith Number

pith:PQCK4XPR

pith:2014:PQCK4XPRXRC33YQBGTLXOLFUZS

not attested not anchored not stored refs pending

Srinivas' Problem for Rational Double Points

John Brevik, Scott Nollet

arxiv:1403.2423 v1 · 2014-03-10 · 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{PQCK4XPRXRC33YQBGTLXOLFUZS}

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	2026-05-18T01:22:12.896037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c04ae5df1bc45bde20134d7772cb4cc92edad1cb042688ab0bc5c23eb84bfe0

Aliases

arxiv: 1403.2423 · arxiv_version: 1403.2423v1 · doi: 10.48550/arxiv.1403.2423 · pith_short_12: PQCK4XPRXRC3 · pith_short_16: PQCK4XPRXRC33YQB · pith_short_8: PQCK4XPR

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/PQCK4XPRXRC33YQBGTLXOLFUZS \
  | 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: 7c04ae5df1bc45bde20134d7772cb4cc92edad1cb042688ab0bc5c23eb84bfe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1737fa42ef9860714a9c3e758c734f6c742f1d77d2c65d61ab8fce51b0391522",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-03-10T21:51:41Z",
    "title_canon_sha256": "b96d648b7ef04b39cd8e2c2f3a909622f8fff05fc9f8c0865e66a5779d6b4254"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2423",
    "kind": "arxiv",
    "version": 1
  }
}