Pith Number

pith:HTAHMNWY

pith:2009:HTAHMNWYSDWRWT7PLYO5YOUOJP

not attested not anchored not stored refs pending

A combinatorial approach to coarse geometry

A.Vavpeti\v\{c}, J.Dydak, M.Cencelj, \v\{Z}.Virk

arxiv:0906.1372 v1 · 2009-06-07 · math.MG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HTAHMNWYSDWRWT7PLYO5YOUOJP}

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	2026-05-18T01:20:12.762663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cc07636d890ed1b4fef5e1ddc3a8e4bf3f16aa914a55b73743cd387eb3eefb4

Aliases

arxiv: 0906.1372 · arxiv_version: 0906.1372v1 · doi: 10.48550/arxiv.0906.1372 · pith_short_12: HTAHMNWYSDWR · pith_short_16: HTAHMNWYSDWRWT7P · pith_short_8: HTAHMNWY

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/HTAHMNWYSDWRWT7PLYO5YOUOJP \
  | 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: 3cc07636d890ed1b4fef5e1ddc3a8e4bf3f16aa914a55b73743cd387eb3eefb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd834e75d5db69afee5ef1858d29cc173bd61bee9e2350c05cd621c998746455",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2009-06-07T17:43:13Z",
    "title_canon_sha256": "6eaf58186822c1ca16f6e6223a6e73181e014e322ba18def120095b0335da275"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1372",
    "kind": "arxiv",
    "version": 1
  }
}