Pith Number

pith:AVJX5BOZ

pith:2008:AVJX5BOZEZ7SQWPLLNKHY2MLQQ

not attested not anchored not stored refs pending

Computing with Classical Real Numbers

Cezary Kaliszyk, Russell O'Connor

arxiv:0809.1644 v1 · 2008-09-09 · 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{AVJX5BOZEZ7SQWPLLNKHY2MLQQ}

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	2026-05-18T04:42:43.367036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05537e85d9267f2859eb5b547c698b8431ea62741f5c200a494443b504d7bf71

Aliases

arxiv: 0809.1644 · arxiv_version: 0809.1644v1 · doi: 10.48550/arxiv.0809.1644 · pith_short_12: AVJX5BOZEZ7S · pith_short_16: AVJX5BOZEZ7SQWPL · pith_short_8: AVJX5BOZ

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/AVJX5BOZEZ7SQWPLLNKHY2MLQQ \
  | 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: 05537e85d9267f2859eb5b547c698b8431ea62741f5c200a494443b504d7bf71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc1715c2aa9c09eefa0cbe6134d80913599780c426a9bacb2fddc0613ec07e68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2008-09-09T19:55:03Z",
    "title_canon_sha256": "0301dcf5955f21add0edf195a8bd556f676d47ba4e60905916561b035c61e93a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1644",
    "kind": "arxiv",
    "version": 1
  }
}