Pith Number

pith:UNKM5GEF

pith:2018:UNKM5GEFX7YFXAOGSAP45GNHYI

not attested not anchored not stored refs pending

On critical points of the relative fractional perimeter

Andrea Malchiodi, Dayana Pagliardini, Matteo Novaga

arxiv:1802.01510 v1 · 2018-02-05 · math.AP · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNKM5GEFX7YFXAOGSAP45GNHYI}

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	2026-05-18T00:24:25.704033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a354ce9885bff05b81c6901fce99a7c2257bc86eabecbe206d317ae6786d36a9

Aliases

arxiv: 1802.01510 · arxiv_version: 1802.01510v1 · doi: 10.48550/arxiv.1802.01510 · pith_short_12: UNKM5GEFX7YF · pith_short_16: UNKM5GEFX7YFXAOG · pith_short_8: UNKM5GEF

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/UNKM5GEFX7YFXAOGSAP45GNHYI \
  | 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: a354ce9885bff05b81c6901fce99a7c2257bc86eabecbe206d317ae6786d36a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95a87cd01375c818635aca0f972ca735d2661ed02b54359af1bf48972da32daf",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-02-05T16:57:08Z",
    "title_canon_sha256": "bb00f5f0c2a66eacfac52deafbeeaa99ee4db5d1d18a09c7635f9f8ad13ac78c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01510",
    "kind": "arxiv",
    "version": 1
  }
}