Pith Number

pith:OO7SQFEE

pith:2011:OO7SQFEEERUJTEMRBONISXWPWG

not attested not anchored not stored refs pending

The typical Turing degree

Adam R. Day, Andrew E.M. Lewis, George Barmpalias

arxiv:1111.1064 v1 · 2011-11-04 · 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{OO7SQFEEERUJTEMRBONISXWPWG}

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	2026-05-18T04:09:35.850058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73bf28148424689991910b9a895ecfb1af10df26bf3842b22c66706de9f0ee8a

Aliases

arxiv: 1111.1064 · arxiv_version: 1111.1064v1 · doi: 10.48550/arxiv.1111.1064 · pith_short_12: OO7SQFEEERUJ · pith_short_16: OO7SQFEEERUJTEMR · pith_short_8: OO7SQFEE

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/OO7SQFEEERUJTEMRBONISXWPWG \
  | 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: 73bf28148424689991910b9a895ecfb1af10df26bf3842b22c66706de9f0ee8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ba42f5ea18712ce473b4539618f1a0d0eae326fa8c99724c6cdc8401fe63dec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-11-04T08:11:49Z",
    "title_canon_sha256": "8650048ce73a8ee1f2ea16089a83f5a81d89963ed11a2ddcaee2dae1ceb80d14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1064",
    "kind": "arxiv",
    "version": 1
  }
}