Pith Number

pith:FZHUF3ZQ

pith:2011:FZHUF3ZQPB5KLADMU7YH2OBD2Y

not attested not anchored not stored refs pending

Inaccessibility and subinaccessibility. In two parts. Part II (in Russian)

Alexander Kiselev

arxiv:1110.0643 v1 · 2011-10-04 · math.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{FZHUF3ZQPB5KLADMU7YH2OBD2Y}

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	2026-05-18T04:11:41.267073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e4f42ef30787aa5806ca7f07d3823d6141e03be3769615b3434ffe7c34e2fa8

Aliases

arxiv: 1110.0643 · arxiv_version: 1110.0643v1 · doi: 10.48550/arxiv.1110.0643 · pith_short_12: FZHUF3ZQPB5K · pith_short_16: FZHUF3ZQPB5KLADM · pith_short_8: FZHUF3ZQ

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/FZHUF3ZQPB5KLADMU7YH2OBD2Y \
  | 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: 2e4f42ef30787aa5806ca7f07d3823d6141e03be3769615b3434ffe7c34e2fa8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "672c0bcb4fb7b7f085bf81149ff8be9065b4f28e57979399e1e2dda55f8fac86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-10-04T11:21:17Z",
    "title_canon_sha256": "7150046da5813b9479bb91b6fd71ccdba69950f4a757ef2da27f7f5079f6ad2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0643",
    "kind": "arxiv",
    "version": 1
  }
}