Pith Number

pith:JMSJMY3L

pith:2018:JMSJMY3LN3CJ4RPIZUPUYYOTGL

not attested not anchored not stored refs pending

Some free boundary problems recast as nonlocal parabolic equations

Hector A. Chang-Lara, Nestor Guillen, Russell W. Schwab

arxiv:1807.02714 v1 · 2018-07-07 · 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{JMSJMY3LN3CJ4RPIZUPUYYOTGL}

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	2026-05-18T00:11:16.226885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b2496636b6ec49e45e8cd1f4c61d332e3ac2dd9efc509413c4a6d85ebe8ed12

Aliases

arxiv: 1807.02714 · arxiv_version: 1807.02714v1 · doi: 10.48550/arxiv.1807.02714 · pith_short_12: JMSJMY3LN3CJ · pith_short_16: JMSJMY3LN3CJ4RPI · pith_short_8: JMSJMY3L

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/JMSJMY3LN3CJ4RPIZUPUYYOTGL \
  | 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: 4b2496636b6ec49e45e8cd1f4c61d332e3ac2dd9efc509413c4a6d85ebe8ed12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b62e7357489fc4503260f3e0a50216d54d6d7c6c53a63074e5467f3b4f9ce94",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-07-07T20:09:38Z",
    "title_canon_sha256": "00fdcef8e589226d20a00882590871b6150174e2aed36290702b7c7f69a32d9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02714",
    "kind": "arxiv",
    "version": 1
  }
}