Pith Number

pith:XNY6IOMP

pith:2013:XNY6IOMPE6NUQUYATBVQBILCMT

not attested not anchored not stored refs pending

Hofer metric from the contact point of view

Tomasz Rybicki

arxiv:1304.1971 v5 · 2013-04-07 · 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{XNY6IOMPE6NUQUYATBVQBILCMT}

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	2026-05-18T03:02:35.114152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb71e4398f279b485300986b00a16264f1fafcea3f5b28c358a425087b05189c

Aliases

arxiv: 1304.1971 · arxiv_version: 1304.1971v5 · doi: 10.48550/arxiv.1304.1971 · pith_short_12: XNY6IOMPE6NU · pith_short_16: XNY6IOMPE6NUQUYA · pith_short_8: XNY6IOMP

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/XNY6IOMPE6NUQUYATBVQBILCMT \
  | 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: bb71e4398f279b485300986b00a16264f1fafcea3f5b28c358a425087b05189c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f063a2e03bf963d7d5b3db531b5adcb0a6a915fb39a0a3fbbd5f32cca9699028",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-04-07T09:35:23Z",
    "title_canon_sha256": "cd4227693db67669f9d919e2559a870553d5e3c7fd8363e2723a20b297dcff23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1971",
    "kind": "arxiv",
    "version": 5
  }
}