Pith Number

pith:T2IANFBA

pith:2014:T2IANFBACRU6HXUZCIEURGNMZZ

not attested not anchored not stored refs pending

Area minimizing polyhedral surfaces are saddle

Anton Petrunin

arxiv:1403.3739 v2 · 2014-03-15 · math.DG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T2IANFBACRU6HXUZCIEURGNMZZ}

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	2026-05-18T01:25:55.837987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e900694201469e3de9912094899acce5918c62e32c148ed1a1d1cea0457c7cc

Aliases

arxiv: 1403.3739 · arxiv_version: 1403.3739v2 · doi: 10.48550/arxiv.1403.3739 · pith_short_12: T2IANFBACRU6 · pith_short_16: T2IANFBACRU6HXUZ · pith_short_8: T2IANFBA

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/T2IANFBACRU6HXUZCIEURGNMZZ \
  | 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: 9e900694201469e3de9912094899acce5918c62e32c148ed1a1d1cea0457c7cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed9a29c170b731b75ebcd95a9394d4e46564c2191914734831f080733b66b1b0",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-03-15T01:35:57Z",
    "title_canon_sha256": "18ffccd1e0330e76c8fb85db76131b4e8075fc21a1aac16ee81871138c6b6638"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.3739",
    "kind": "arxiv",
    "version": 2
  }
}