Pith Number

pith:H44MB4CF

pith:2012:H44MB4CFNVQSGJ43YQX3OJ6UAY

not attested not anchored not stored refs pending

Computability and analysis: the legacy of Alan Turing

Jeremy Avigad, Vasco Brattka

arxiv:1206.3431 v2 · 2012-06-15 · math.LO · cs.LO · math.HO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H44MB4CFNVQSGJ43YQX3OJ6UAY}

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	2026-05-17T23:58:55.021911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f38c0f0456d6123279bc42fb727d406374ec31806983b1f3e34669578c9bb4a

Aliases

arxiv: 1206.3431 · arxiv_version: 1206.3431v2 · doi: 10.48550/arxiv.1206.3431 · pith_short_12: H44MB4CFNVQS · pith_short_16: H44MB4CFNVQSGJ43 · pith_short_8: H44MB4CF

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/H44MB4CFNVQSGJ43YQX3OJ6UAY \
  | 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: 3f38c0f0456d6123279bc42fb727d406374ec31806983b1f3e34669578c9bb4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "952bbf870596c2e8ffea44941dab2764504986b40693478c070aa083eff9e86f",
    "cross_cats_sorted": [
      "cs.LO",
      "math.HO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-06-15T11:38:29Z",
    "title_canon_sha256": "5d0cac320302c0a31a34566f7abe3ba76e485f76aa80a99b91acac522551a462"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.3431",
    "kind": "arxiv",
    "version": 2
  }
}