Pith Number

pith:B2G2NGIZ

pith:2017:B2G2NGIZLF7OTA6JZQKGYEUMQD

not attested not anchored not stored refs pending

Solutions to a two-dimensional, Neumann free boundary problem

Gary Moon, John A. Gemmer, Sarah Raynor

arxiv:1708.09329 v1 · 2017-08-30 · 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{B2G2NGIZLF7OTA6JZQKGYEUMQD}

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	2026-05-18T00:36:20.159176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e8da69919597ee983c9cc146c128c80e81cf7f4123fe2084ae1eaba817f4cd2

Aliases

arxiv: 1708.09329 · arxiv_version: 1708.09329v1 · doi: 10.48550/arxiv.1708.09329 · pith_short_12: B2G2NGIZLF7O · pith_short_16: B2G2NGIZLF7OTA6J · pith_short_8: B2G2NGIZ

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/B2G2NGIZLF7OTA6JZQKGYEUMQD \
  | 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: 0e8da69919597ee983c9cc146c128c80e81cf7f4123fe2084ae1eaba817f4cd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a9fd123fa2e34a2b284f6759bc29f922c8b10cb9c4738e923233425a49592da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-08-30T15:49:29Z",
    "title_canon_sha256": "d4f9609392e607f15ada46938e38785205a635355778e2b5ac199eb6a9983c4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09329",
    "kind": "arxiv",
    "version": 1
  }
}