Pith Number

pith:WGLACXWV

pith:2013:WGLACXWVTFLLXMEMPRW3OQKFDR

not attested not anchored not stored refs pending

Absence of splash singularities for SQG sharp fronts and the Muskat problem

Francisco Gancedo, Robert M. Strain

arxiv:1309.4023 v1 · 2013-09-16 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WGLACXWVTFLLXMEMPRW3OQKFDR}

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	2026-05-18T01:20:22.454124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b196015ed59956bbb08c7c6db741451c44366973ae380bb20add735db7768312

Aliases

arxiv: 1309.4023 · arxiv_version: 1309.4023v1 · doi: 10.48550/arxiv.1309.4023 · pith_short_12: WGLACXWVTFLL · pith_short_16: WGLACXWVTFLLXMEM · pith_short_8: WGLACXWV

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/WGLACXWVTFLLXMEMPRW3OQKFDR \
  | 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: b196015ed59956bbb08c7c6db741451c44366973ae380bb20add735db7768312

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f86bb12a9d445e721cfe45d4ad28027db335c162b4d53a468b723bb228eedd3",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-09-16T16:28:18Z",
    "title_canon_sha256": "69b40c7d353a05b623e201c62a034e74706185b9ac30fc0cad4bc6e1a457c664"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4023",
    "kind": "arxiv",
    "version": 1
  }
}