Pith Number

pith:PV6NIBGL

pith:2013:PV6NIBGLQPEYUOIHJSD5KXPSRA

not attested not anchored not stored refs pending

Positive provability logic for uniform reflection principles

Lev Beklemishev

arxiv:1304.4396 v3 · 2013-04-16 · 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{PV6NIBGLQPEYUOIHJSD5KXPSRA}

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	2026-05-18T03:18:28.932170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d7cd404cb83c98a39074c87d55df28803d9188fcf88f1dc6a0857cb3d2d1776

Aliases

arxiv: 1304.4396 · arxiv_version: 1304.4396v3 · doi: 10.48550/arxiv.1304.4396 · pith_short_12: PV6NIBGLQPEY · pith_short_16: PV6NIBGLQPEYUOIH · pith_short_8: PV6NIBGL

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/PV6NIBGLQPEYUOIHJSD5KXPSRA \
  | 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: 7d7cd404cb83c98a39074c87d55df28803d9188fcf88f1dc6a0857cb3d2d1776

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a36e57ec291311418629b11e957fce22cdb2376fd5b0251c098575255fa8cdab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-04-16T10:55:36Z",
    "title_canon_sha256": "badb11fb0bab9689e71bb3740604d5d8958828347c12b589f92b0ee78526efba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4396",
    "kind": "arxiv",
    "version": 3
  }
}