Pith Number

pith:P7RWRDBM

pith:2018:P7RWRDBMSY35LBDEYNWTIS6NGT

not attested not anchored not stored refs pending

A wave equation perturbed by viscous terms: fast and slow times diffusion effects in a Neumann problem

Monica De Angelis

arxiv:1810.08972 v1 · 2018-10-21 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P7RWRDBMSY35LBDEYNWTIS6NGT}

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	2026-05-18T00:02:41.322255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fe3688c2c9637d58464c36d344bcd34f94e080778df5fe6ca82a97d3c2dd331

Aliases

arxiv: 1810.08972 · arxiv_version: 1810.08972v1 · doi: 10.48550/arxiv.1810.08972 · pith_short_12: P7RWRDBMSY35 · pith_short_16: P7RWRDBMSY35LBDE · pith_short_8: P7RWRDBM

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/P7RWRDBMSY35LBDEYNWTIS6NGT \
  | 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: 7fe3688c2c9637d58464c36d344bcd34f94e080778df5fe6ca82a97d3c2dd331

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7b26e877c42c06d34722bd02e0fd20a83ea32530d371d6294b13830a23c6592",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2018-10-21T15:14:52Z",
    "title_canon_sha256": "7ca93a3ac745d06c2ba38700ebb82073d1723ad9c10c1aa2f8177eb220b31e07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08972",
    "kind": "arxiv",
    "version": 1
  }
}