Pith Number

pith:USUMZJI4

pith:2017:USUMZJI4PCJGAL2WQMKPTSQAOS

not attested not anchored not stored refs pending

Regularized and Approximate Equations for Sharp Fronts in the Surface Quasi-Geostrophic Equation and its Generalizations

Jingyang Shu, John K. Hunter

arxiv:1709.03194 v2 · 2017-09-10 · 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{USUMZJI4PCJGAL2WQMKPTSQAOS}

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	2026-05-18T00:15:21.115012Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4a8cca51c7892602f568314f9ca0074b414e3ed642a4c4f0a718fcd3f9d7b80

Aliases

arxiv: 1709.03194 · arxiv_version: 1709.03194v2 · doi: 10.48550/arxiv.1709.03194 · pith_short_12: USUMZJI4PCJG · pith_short_16: USUMZJI4PCJGAL2W · pith_short_8: USUMZJI4

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/USUMZJI4PCJGAL2WQMKPTSQAOS \
  | 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: a4a8cca51c7892602f568314f9ca0074b414e3ed642a4c4f0a718fcd3f9d7b80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca43e2ef4772000de35299715ca3717cda099d1ce136c2dbf3e2ff6ef67f5013",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-09-10T23:04:27Z",
    "title_canon_sha256": "b221c5175bcc8167336695cd8cf6711b01774acf4ca2e39a036f92f89fa7bb54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03194",
    "kind": "arxiv",
    "version": 2
  }
}