Pith Number

pith:ENMPRKDR

pith:2014:ENMPRKDRTBXBS7VMLYRZ2M7W4E

not attested not anchored not stored refs pending

The unified transform method for linear initial-boundary value problems: a spectral interpretation

David A. Smith

arxiv:1408.3659 v1 · 2014-08-15 · math.SP · 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{ENMPRKDRTBXBS7VMLYRZ2M7W4E}

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	2026-05-18T02:45:03.614852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2358f8a871986e197eac5e239d33f6e10e89cede2d39a9322ba645adcdb0656d

Aliases

arxiv: 1408.3659 · arxiv_version: 1408.3659v1 · doi: 10.48550/arxiv.1408.3659 · pith_short_12: ENMPRKDRTBXB · pith_short_16: ENMPRKDRTBXBS7VM · pith_short_8: ENMPRKDR

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/ENMPRKDRTBXBS7VMLYRZ2M7W4E \
  | 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: 2358f8a871986e197eac5e239d33f6e10e89cede2d39a9322ba645adcdb0656d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2caf038930bbb0d20b1aa9832883a382da5fd97e38ff76d288bde9ac713e0b26",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2014-08-15T21:43:41Z",
    "title_canon_sha256": "fe2a2b7eb774b5e0a8bc077c2f53759d18635068340f6b80e5cfc380987edbb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.3659",
    "kind": "arxiv",
    "version": 1
  }
}