Pith Number

pith:JOXWJQRY

pith:2019:JOXWJQRYEQPFUL6TVSZF3ORBBI

not attested not anchored not stored refs pending

Global existence and uniqueness of the solution to a nonlinear parabolic equation

Alexander G. Ramm

arxiv:1904.10534 v1 · 2019-04-21 · math.AP · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JOXWJQRYEQPFUL6TVSZF3ORBBI}

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	2026-05-17T23:47:53.475785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4baf64c238241e5a2fd3acb25dba210a028236da80b948c735fb76a4706eee07

Aliases

arxiv: 1904.10534 · arxiv_version: 1904.10534v1 · doi: 10.48550/arxiv.1904.10534 · pith_short_12: JOXWJQRYEQPF · pith_short_16: JOXWJQRYEQPFUL6T · pith_short_8: JOXWJQRY

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/JOXWJQRYEQPFUL6TVSZF3ORBBI \
  | 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: 4baf64c238241e5a2fd3acb25dba210a028236da80b948c735fb76a4706eee07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "750f8cbbed82cab37314666756c4707f5c31f9fe12a4271c874114e37a3952eb",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-04-21T19:05:03Z",
    "title_canon_sha256": "82c5f0ad75053608a0ff98f170dfc1ed9c3033766b825496fa122ea00555bf50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10534",
    "kind": "arxiv",
    "version": 1
  }
}