Pith Number

pith:F7QWQCA2

pith:2010:F7QWQCA2AB6TZIDLTN4ROVQ7AC

not attested not anchored not stored refs pending

Closed Choice and a Uniform Low Basis Theorem

Arno Pauly, Matthew de Brecht, Vasco Brattka

arxiv:1002.2800 v2 · 2010-02-14 · math.LO · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F7QWQCA2AB6TZIDLTN4ROVQ7AC}

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	2026-05-18T03:53:32.059004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fe168081a007d3ca06b9b7917561f00b88fb5584cba6f8ff187c89a8028bba6

Aliases

arxiv: 1002.2800 · arxiv_version: 1002.2800v2 · doi: 10.48550/arxiv.1002.2800 · pith_short_12: F7QWQCA2AB6T · pith_short_16: F7QWQCA2AB6TZIDL · pith_short_8: F7QWQCA2

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/F7QWQCA2AB6TZIDLTN4ROVQ7AC \
  | 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: 2fe168081a007d3ca06b9b7917561f00b88fb5584cba6f8ff187c89a8028bba6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67da152658c51a6bf1ab8bd61c1ba32af83114cdaf41ca3a042b111f54bc9edc",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2010-02-14T21:17:54Z",
    "title_canon_sha256": "be7d1ee7c8f0e617314a58a5e9c37183bc52fee6a9220eaaed7beaae2bd36c1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.2800",
    "kind": "arxiv",
    "version": 2
  }
}