Pith Number

pith:MZPAHXIN

pith:2017:MZPAHXIN36CTZP2KDTRE6J5BPQ

not attested not anchored not stored refs pending

Feedback computability on Cantor space

Cameron E. Freer, Nathanael L. Ackerman, Robert S. Lubarsky

arxiv:1708.01139 v5 · 2017-08-03 · math.LO · 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{MZPAHXIN36CTZP2KDTRE6J5BPQ}

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	2026-07-05T06:23:21.153073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

665e03dd0ddf853cbf4a1ce24f27a17c1c86d662b1815024feb86eb51c3b0e85

Aliases

arxiv: 1708.01139 · arxiv_version: 1708.01139v5 · doi: 10.48550/arxiv.1708.01139 · pith_short_12: MZPAHXIN36CT · pith_short_16: MZPAHXIN36CTZP2K · pith_short_8: MZPAHXIN

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/MZPAHXIN36CTZP2KDTRE6J5BPQ \
  | 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: 665e03dd0ddf853cbf4a1ce24f27a17c1c86d662b1815024feb86eb51c3b0e85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "086bf567f95b420cd4dd60773a37a20f363c1b5d280058f4dc398dc58b1b7f5f",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-08-03T13:53:00Z",
    "title_canon_sha256": "7d85e58dccbf3937bff0ecfa8fd21c5725c97c0389de3f8ef7a750040fa9429f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01139",
    "kind": "arxiv",
    "version": 5
  }
}