Pith Number

pith:ABA77SVT

pith:2019:ABA77SVTXMUXMQC7ZI3NGWOILR

not attested not anchored not stored refs pending

On the Constructive Truth and Falsity in Peano Arithmetic

Hirohiko Kushida

arxiv:1905.10494 v1 · 2019-05-25 · 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{ABA77SVTXMUXMQC7ZI3NGWOILR}

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	2026-05-17T23:45:08.321644Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0041ffcab3bb2976405fca36d359c85c6eebd81a7b70b37fec23bfc6c9f7837f

Aliases

arxiv: 1905.10494 · arxiv_version: 1905.10494v1 · doi: 10.48550/arxiv.1905.10494 · pith_short_12: ABA77SVTXMUX · pith_short_16: ABA77SVTXMUXMQC7 · pith_short_8: ABA77SVT

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/ABA77SVTXMUXMQC7ZI3NGWOILR \
  | 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: 0041ffcab3bb2976405fca36d359c85c6eebd81a7b70b37fec23bfc6c9f7837f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "492c21ddd5ed4c9556b8ff1b16ffde43db9ef3691e19b49d8173b8d6b0c339aa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-05-25T01:31:54Z",
    "title_canon_sha256": "d6e2fc1222477a8a1c22d0da129683ab8f988ffd9a650eff2654b9e6383dd792"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10494",
    "kind": "arxiv",
    "version": 1
  }
}