Pith Number

pith:3EARWBKQ

pith:2012:3EARWBKQZ7XJPHYUS6KMKRWGAK

not attested not anchored not stored refs pending

Turing machines can be efficiently simulated by the General Purpose Analog Computer

Amaury Pouly, Daniel S. Gra\c{c}a, Olivier Bournez

arxiv:1203.4667 v2 · 2012-03-21 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3EARWBKQZ7XJPHYUS6KMKRWGAK}

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	2026-05-18T00:52:42.226596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9011b0550cfee979f149794c546c602aab955ba8e2be51b4f195e597ddd58c3

Aliases

arxiv: 1203.4667 · arxiv_version: 1203.4667v2 · doi: 10.48550/arxiv.1203.4667 · pith_short_12: 3EARWBKQZ7XJ · pith_short_16: 3EARWBKQZ7XJPHYU · pith_short_8: 3EARWBKQ

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/3EARWBKQZ7XJPHYUS6KMKRWGAK \
  | 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: d9011b0550cfee979f149794c546c602aab955ba8e2be51b4f195e597ddd58c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c6b9624cabe80c493bcf449009772d8dcbdc909d00565ac6b12a624318f810b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2012-03-21T07:48:23Z",
    "title_canon_sha256": "0f276556559f65be5316df6684aaab9a5f2540cb3eadde042d89ce41a8d8f7b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4667",
    "kind": "arxiv",
    "version": 2
  }
}