Pith Number

pith:O5LFGZD6

pith:2014:O5LFGZD63N5CTI5GOWUWYDSMIM

not attested not anchored not stored refs pending

The Unified Transform for the modified Helmholtz equation in the exterior of a square

A. S. Fokas, J. Lenells

arxiv:1401.2502 v1 · 2014-01-11 · 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{O5LFGZD63N5CTI5GOWUWYDSMIM}

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	2026-05-18T03:02:33.332781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

775653647edb7a29a3a675a96c0e4c431e83bfd7e75ecd73be3a01b200530bf1

Aliases

arxiv: 1401.2502 · arxiv_version: 1401.2502v1 · doi: 10.48550/arxiv.1401.2502 · pith_short_12: O5LFGZD63N5C · pith_short_16: O5LFGZD63N5CTI5G · pith_short_8: O5LFGZD6

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/O5LFGZD63N5CTI5GOWUWYDSMIM \
  | 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: 775653647edb7a29a3a675a96c0e4c431e83bfd7e75ecd73be3a01b200530bf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a62c26aff8a769cea6546c003d636f534af290de155287758b5db62ae65d79c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-01-11T06:07:57Z",
    "title_canon_sha256": "67e688d57442deee15e4946125767420cf2318339456191e12556e32b6f1a1e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2502",
    "kind": "arxiv",
    "version": 1
  }
}