Pith Number

pith:XAXYHQVB

pith:2017:XAXYHQVB4J6TNW2THANFPPAQQQ

not attested not anchored not stored refs pending

Reflection calculus and conservativity spectra

Lev D. Beklemishev

arxiv:1703.09314 v2 · 2017-03-27 · 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{XAXYHQVB4J6TNW2THANFPPAQQQ}

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.

Cited by

2 papers in Pith

Operational Inexpressibility at the Step-Duplicating Primitive Recursor Orientation Boundary

Receipt and verification

First computed	2026-05-18T00:01:00.807552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b82f83c2a1e27d36db53381a57bc10840fc2346ae8c17705e93d95eb91945c6e

Aliases

arxiv: 1703.09314 · arxiv_version: 1703.09314v2 · doi: 10.48550/arxiv.1703.09314 · pith_short_12: XAXYHQVB4J6T · pith_short_16: XAXYHQVB4J6TNW2T · pith_short_8: XAXYHQVB

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/XAXYHQVB4J6TNW2THANFPPAQQQ \
  | 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: b82f83c2a1e27d36db53381a57bc10840fc2346ae8c17705e93d95eb91945c6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fac931d11d4a172aeb3f1d06d42cdcedc085773fac971de52f5dd1bbd3bf371",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-03-27T21:26:15Z",
    "title_canon_sha256": "81fb975e1b43e2ce06a45dcb97a53af422c4f046a2e7ec3448727421ca965315"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09314",
    "kind": "arxiv",
    "version": 2
  }
}