Pith Number

pith:DYRKC5GQ

pith:2015:DYRKC5GQF4PLG4MM4PEPFYXKY2

not attested not anchored not stored refs pending

The Petrovski\u{\i} criterion and barriers for degenerate and singular p-parabolic equations

Anders Bj\"orn, Jana Bj\"orn, Ugo Gianazza

arxiv:1509.02279 v2 · 2015-09-08 · 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{DYRKC5GQF4PLG4MM4PEPFYXKY2}

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	2026-05-18T00:36:48.134749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e22a174d02f1eb3718ce3c8f2e2eac6bd2aa1aedcbd1cc9ad8704957a7d08ad

Aliases

arxiv: 1509.02279 · arxiv_version: 1509.02279v2 · doi: 10.48550/arxiv.1509.02279 · pith_short_12: DYRKC5GQF4PL · pith_short_16: DYRKC5GQF4PLG4MM · pith_short_8: DYRKC5GQ

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/DYRKC5GQF4PLG4MM4PEPFYXKY2 \
  | 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: 1e22a174d02f1eb3718ce3c8f2e2eac6bd2aa1aedcbd1cc9ad8704957a7d08ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfbc984482b8f304eea1df5387111172c39d709426a99bf9692bb739eadda5fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-09-08T08:19:59Z",
    "title_canon_sha256": "84a80efd23e899188557f1f172a92f8acdd7c95b46646116ca823a054d18326e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02279",
    "kind": "arxiv",
    "version": 2
  }
}