Pith Number

pith:BDM4HBUG

pith:2010:BDM4HBUGKCQE6VSICK3RORTMZ7

not attested not anchored not stored refs pending

On a question by Corson about point-finite coverings

Andrea Marchese, Clemente Zanco

arxiv:1009.4681 v1 · 2010-09-23 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BDM4HBUGKCQE6VSICK3RORTMZ7}

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	2026-05-18T02:45:21.771945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08d9c3868650a04f564812b717466ccfd7e93042ede0d175da1709e7d9121ac9

Aliases

arxiv: 1009.4681 · arxiv_version: 1009.4681v1 · doi: 10.48550/arxiv.1009.4681 · pith_short_12: BDM4HBUGKCQE · pith_short_16: BDM4HBUGKCQE6VSI · pith_short_8: BDM4HBUG

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/BDM4HBUGKCQE6VSICK3RORTMZ7 \
  | 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: 08d9c3868650a04f564812b717466ccfd7e93042ede0d175da1709e7d9121ac9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e58373975c71150af9dfc0d7222a8a722e5267fd4199bf43419afb6155cc3141",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2010-09-23T18:42:32Z",
    "title_canon_sha256": "8c05ca0c262f25030352bbb3ffabebdbdb466d0cbea5aee1ceefa6227805ba90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4681",
    "kind": "arxiv",
    "version": 1
  }
}