Pith Number

pith:A26LYX2B

pith:2008:A26LYX2BVM27SELBQLSTL5SYZW

not attested not anchored not stored refs pending

Well-Centered Triangulation

Anil N. Hirani, Damrong Guoy, Edgar Ramos, Evan VanderZee

arxiv:0802.2108 v3 · 2008-02-14 · cs.CG · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A26LYX2BVM27SELBQLSTL5SYZW}

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	2026-06-03T22:06:04.462674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06bcbc5f41ab35f9116182e535f658cdb8630b7967cde00d14474bdf4b07bda6

Aliases

arxiv: 0802.2108 · arxiv_version: 0802.2108v3 · doi: 10.48550/arxiv.0802.2108 · pith_short_12: A26LYX2BVM27 · pith_short_16: A26LYX2BVM27SELB · pith_short_8: A26LYX2B

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/A26LYX2BVM27SELBQLSTL5SYZW \
  | 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: 06bcbc5f41ab35f9116182e535f658cdb8630b7967cde00d14474bdf4b07bda6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29da631e5acadb81c2307dc63584ca517c517564a0d5e880cf830da96e13154b",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2008-02-14T23:04:07Z",
    "title_canon_sha256": "7ecb95eb51ef8ba8e003a22f3b84bca6ce8ea25537670ca64531fc463212acb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.2108",
    "kind": "arxiv",
    "version": 3
  }
}