Pith Number

pith:EHXTQVYO

pith:2016:EHXTQVYON4EJPI2L55V4Y6ZYYI

not attested not anchored not stored refs pending

On Splits of Computably enumerable sets

Peter Cholak

arxiv:1605.03034 v4 · 2016-05-10 · 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{EHXTQVYON4EJPI2L55V4Y6ZYYI}

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	2026-05-18T01:09:39.858841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21ef38570e6f0897a34bef6bcc7b38c238abfa0c2397a2981960b8e14a175b0f

Aliases

arxiv: 1605.03034 · arxiv_version: 1605.03034v4 · doi: 10.48550/arxiv.1605.03034 · pith_short_12: EHXTQVYON4EJ · pith_short_16: EHXTQVYON4EJPI2L · pith_short_8: EHXTQVYO

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/EHXTQVYON4EJPI2L55V4Y6ZYYI \
  | 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: 21ef38570e6f0897a34bef6bcc7b38c238abfa0c2397a2981960b8e14a175b0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21736d8271762c07c41b690cd4b7891bb5e3a5c02d6de811085560ce42f4cb08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-05-10T14:33:33Z",
    "title_canon_sha256": "2632933322883216fd3ad75a8715a8e829ec64d9d89d5d7d1d0651d04921a06c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.03034",
    "kind": "arxiv",
    "version": 4
  }
}