Pith Number

pith:2BDM6J5X

pith:2009:2BDM6J5XG2KVFH6DEU4SP552JA

not attested not anchored not stored refs pending

A Note on Monotonically Metacompact Spaces

David J. Lutzer, Harold R. Bennett, Klaas Pieter Hart

arxiv:0910.4106 v1 · 2009-10-21 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2BDM6J5XG2KVFH6DEU4SP552JA}

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	2026-05-18T04:14:45.195249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d046cf27b73695529fc3253927f7ba4807439fa7714989124d18660d81ffc211

Aliases

arxiv: 0910.4106 · arxiv_version: 0910.4106v1 · doi: 10.48550/arxiv.0910.4106 · pith_short_12: 2BDM6J5XG2KV · pith_short_16: 2BDM6J5XG2KVFH6D · pith_short_8: 2BDM6J5X

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/2BDM6J5XG2KVFH6DEU4SP552JA \
  | 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: d046cf27b73695529fc3253927f7ba4807439fa7714989124d18660d81ffc211

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0e1a33a7c91db41d0e6d91b215b9cbb47c197c3f31ecd39955f936050e9e914",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2009-10-21T14:43:42Z",
    "title_canon_sha256": "a95a23600a4b27131060c306871e008ff3a9cbf75f32573e894ec237857acf48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4106",
    "kind": "arxiv",
    "version": 1
  }
}