Pith Number

pith:IPI4GDI3

pith:2014:IPI4GDI3CHWPRTPVCIHNROZAMO

not attested not anchored not stored refs pending

Extremal K-contact metrics

Markus Upmeier, Mehdi Lejmi

arxiv:1410.1370 v1 · 2014-10-06 · 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{IPI4GDI3CHWPRTPVCIHNROZAMO}

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	2026-05-18T02:41:02.236876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43d1c30d1b11ecf8cdf5120ed8bb2063aba0b4e192a2359dba5786441431a41b

Aliases

arxiv: 1410.1370 · arxiv_version: 1410.1370v1 · doi: 10.48550/arxiv.1410.1370 · pith_short_12: IPI4GDI3CHWP · pith_short_16: IPI4GDI3CHWPRTPV · pith_short_8: IPI4GDI3

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/IPI4GDI3CHWPRTPVCIHNROZAMO \
  | 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: 43d1c30d1b11ecf8cdf5120ed8bb2063aba0b4e192a2359dba5786441431a41b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e6e4098babc6f959168496dee9a1cf30089dfe8f2ec28ac55438c3781357ea5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-10-06T13:46:53Z",
    "title_canon_sha256": "f1e026895a230fa30eed8362a8b77446c4faa173c86a95ceca33b357a16680c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.1370",
    "kind": "arxiv",
    "version": 1
  }
}