Pith Number

pith:2GDLMWNA

pith:2007:2GDLMWNAEPZT6XRGTBHVN64LNJ

not attested not anchored not stored refs pending

A New Well-posed Nonlocal Perona-Malik Type Equation

Patrick Guidotti

arxiv:math/0702715 v1 · 2007-02-23 · math.AP · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2GDLMWNAEPZT6XRGTBHVN64LNJ}

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	2026-05-18T00:08:16.556793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d186b659a023f33f5e26984f56fb8b6a6ac26d07e937d2abade0ad5088634088

Aliases

arxiv: math/0702715 · arxiv_version: math/0702715v1 · doi: 10.48550/arxiv.math/0702715 · pith_short_12: 2GDLMWNAEPZT · pith_short_16: 2GDLMWNAEPZT6XRG · pith_short_8: 2GDLMWNA

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/2GDLMWNAEPZT6XRGTBHVN64LNJ \
  | 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: d186b659a023f33f5e26984f56fb8b6a6ac26d07e937d2abade0ad5088634088

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "995afa63646687c5813804b7f5fbc8a854a40de5fd66aebb996d45509e36be72",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "",
    "primary_cat": "math.AP",
    "submitted_at": "2007-02-23T20:37:08Z",
    "title_canon_sha256": "ecd3c9032c0ec058f6f55cabd0d53bfae75e2f0c03a153bf34d8f326488fa75b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0702715",
    "kind": "arxiv",
    "version": 1
  }
}