Pith Number

pith:XBF54SDD

pith:2014:XBF54SDDU43J7VTCQ22K7MPFAH

not attested not anchored not stored refs pending

Local solutions to a free boundary problem for the Willmore functional

Ernst Kuwert, Roberta Alessandroni

arxiv:1408.6670 v1 · 2014-08-28 · math.DG · 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{XBF54SDDU43J7VTCQ22K7MPFAH}

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	2026-05-18T02:44:01.102048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b84bde4863a7369fd66286b4afb1e501d41568fdb7d91a983e2bfde4d9bd3468

Aliases

arxiv: 1408.6670 · arxiv_version: 1408.6670v1 · doi: 10.48550/arxiv.1408.6670 · pith_short_12: XBF54SDDU43J · pith_short_16: XBF54SDDU43J7VTC · pith_short_8: XBF54SDD

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/XBF54SDDU43J7VTCQ22K7MPFAH \
  | 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: b84bde4863a7369fd66286b4afb1e501d41568fdb7d91a983e2bfde4d9bd3468

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f00c756851d1279d3f3e18aba713c01ada50ece97636be2440a92e5c3de0da92",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-08-28T10:24:47Z",
    "title_canon_sha256": "1bfaab365a37ae7c4fa63cac277e09ba19bee5cc20cdb66e215514f5d08b4746"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.6670",
    "kind": "arxiv",
    "version": 1
  }
}