Pith Number

pith:7YCXJRTQ

pith:2014:7YCXJRTQM4ZFTOUJR5XDIVCMYA

not attested not anchored not stored refs pending

On approximate decidability of minimal programs

Jason Teutsch, Marius Zimand

arxiv:1409.0496 v1 · 2014-09-01 · math.LO · cs.CC · 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{7YCXJRTQM4ZFTOUJR5XDIVCMYA}

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	2026-05-18T02:43:52.664576Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe0574c670673259ba898f6e34544cc0233219e7f14c8c648604fc2fb386337f

Aliases

arxiv: 1409.0496 · arxiv_version: 1409.0496v1 · doi: 10.48550/arxiv.1409.0496 · pith_short_12: 7YCXJRTQM4ZF · pith_short_16: 7YCXJRTQM4ZFTOUJ · pith_short_8: 7YCXJRTQ

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/7YCXJRTQM4ZFTOUJR5XDIVCMYA \
  | 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: fe0574c670673259ba898f6e34544cc0233219e7f14c8c648604fc2fb386337f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4180f1afecab7d80978f4b1dad9e990fe4db410717e28343447005d105c0ec31",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-09-01T18:10:29Z",
    "title_canon_sha256": "3be7409e339546206807b58565144f492060e96fe1c90ffa78e6c96d77362aae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.0496",
    "kind": "arxiv",
    "version": 1
  }
}