Pith Number

pith:I4U4XKAA

pith:2019:I4U4XKAAEQY7XDBYNX7UXEXKHL

not attested not anchored not stored refs pending

Delaunay decompositions in dimension 4

Iku Nakamura, Ken Sugawara

arxiv:1904.12565 v2 · 2019-04-29 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I4U4XKAAEQY7XDBYNX7UXEXKHL}

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	2026-05-17T23:47:11.888711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4729cba8002431fb8c386dff4b92ea3adcd82218c745366f2ab0621a3097b9ae

Aliases

arxiv: 1904.12565 · arxiv_version: 1904.12565v2 · doi: 10.48550/arxiv.1904.12565 · pith_short_12: I4U4XKAAEQY7 · pith_short_16: I4U4XKAAEQY7XDBY · pith_short_8: I4U4XKAA

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/I4U4XKAAEQY7XDBYNX7UXEXKHL \
  | 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: 4729cba8002431fb8c386dff4b92ea3adcd82218c745366f2ab0621a3097b9ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fb9ea756c2ef3e3ac2ca41ed53ed01da28053d948993da0f1ddc100c7d3e3d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-04-29T11:43:18Z",
    "title_canon_sha256": "b6488cabc67f7b9cc7a460e7fbcfa4df863a3fafad4c2029c5790530697f280a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12565",
    "kind": "arxiv",
    "version": 2
  }
}