Pith Number

pith:O5O5H4OT

pith:2009:O5O5H4OTVL5MJF6K322BWPICBJ

not attested not anchored not stored refs pending

Metric inequalities for polygons

Adrian Dumitrescu

arxiv:0912.3929 v4 · 2009-12-19 · math.MG · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O5O5H4OTVL5MJF6K322BWPICBJ}

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	2026-05-18T03:53:03.553070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

775dd3f1d3aafac497cadeb41b3d020a4d3d4494b97f2144439c4b8ac0a9785d

Aliases

arxiv: 0912.3929 · arxiv_version: 0912.3929v4 · doi: 10.48550/arxiv.0912.3929 · pith_short_12: O5O5H4OTVL5M · pith_short_16: O5O5H4OTVL5MJF6K · pith_short_8: O5O5H4OT

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/O5O5H4OTVL5MJF6K322BWPICBJ \
  | 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: 775dd3f1d3aafac497cadeb41b3d020a4d3d4494b97f2144439c4b8ac0a9785d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdaca24da490dcdc60b5024bad19fb6e6bde9a429f1465a16f9bb5433b3beffe",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2009-12-19T19:33:55Z",
    "title_canon_sha256": "51a7da24c9430550ff691699afc3b6866a8c2e37ccb69f1b37b07bcfae7257b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3929",
    "kind": "arxiv",
    "version": 4
  }
}