Pith Number

pith:GYTTDR2I

pith:2018:GYTTDR2INXN23KPSQJYNHBFQNI

not attested not anchored not stored refs pending

A surface with discontinuous isoperimetric profile

Eric Swenson, Panos Papasoglu

arxiv:1803.07375 v2 · 2018-03-20 · 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{GYTTDR2INXN23KPSQJYNHBFQNI}

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	2026-05-17T23:40:04.548376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

362731c7486ddbada9f28270d384b06a1cb65f8f284e4fd7440d2d89e50ec426

Aliases

arxiv: 1803.07375 · arxiv_version: 1803.07375v2 · doi: 10.48550/arxiv.1803.07375 · pith_short_12: GYTTDR2INXN2 · pith_short_16: GYTTDR2INXN23KPS · pith_short_8: GYTTDR2I

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/GYTTDR2INXN23KPSQJYNHBFQNI \
  | 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: 362731c7486ddbada9f28270d384b06a1cb65f8f284e4fd7440d2d89e50ec426

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d664b54a29abb10968de6845052fc4e4ebe8ff969ad29a35bdbbf3c23f24a137",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-03-20T11:30:33Z",
    "title_canon_sha256": "3077f1ffd1a7fd6cc0db38d32af468902c7495456ac7b45358b6851daf6f19fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07375",
    "kind": "arxiv",
    "version": 2
  }
}