Pith Number

pith:UQZXBLLO

pith:1998:UQZXBLLOYJN5J64WQZHOZLNDJS

not attested not anchored not stored refs pending

Nonexistence of simple hyperbolic blow-up for the quasi-geostrophic equation

Diego Cordoba

arxiv:math/9811184 v1 · 1998-11-01 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQZXBLLOYJN5J64WQZHOZLNDJS}

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	2026-05-18T01:05:33.496652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a43370ad6ec25bd4fb96864eecada34c9cfd3015ec2f1d2a29ca2a95c56755c0

Aliases

arxiv: math/9811184 · arxiv_version: math/9811184v1 · doi: 10.48550/arxiv.math/9811184 · pith_short_12: UQZXBLLOYJN5 · pith_short_16: UQZXBLLOYJN5J64W · pith_short_8: UQZXBLLO

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/UQZXBLLOYJN5J64WQZHOZLNDJS \
  | 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: a43370ad6ec25bd4fb96864eecada34c9cfd3015ec2f1d2a29ca2a95c56755c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6eb8a7c0190c1a14cf471add4f43a5d332a846045fe88addaf8a960225d8a77e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AP",
    "submitted_at": "1998-11-01T00:00:00Z",
    "title_canon_sha256": "919d7c395ea44db327aa2b1189e324457cb065c02526ac7467067690f6b90259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9811184",
    "kind": "arxiv",
    "version": 1
  }
}