Pith Number

pith:HCCAIXZ6

pith:2017:HCCAIXZ6UM5YM4EYEIXVQAL7II

not attested not anchored not stored refs pending

On the computability of graph Turing machines

Cameron Freer, Nathanael Ackerman

arxiv:1703.09406 v1 · 2017-03-28 · math.LO · 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{HCCAIXZ6UM5YM4EYEIXVQAL7II}

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	2026-05-18T00:47:44.656331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3884045f3ea33b867098222f58017f422378ed1f540a627454fde34230fceec7

Aliases

arxiv: 1703.09406 · arxiv_version: 1703.09406v1 · doi: 10.48550/arxiv.1703.09406 · pith_short_12: HCCAIXZ6UM5Y · pith_short_16: HCCAIXZ6UM5YM4EY · pith_short_8: HCCAIXZ6

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/HCCAIXZ6UM5YM4EYEIXVQAL7II \
  | 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: 3884045f3ea33b867098222f58017f422378ed1f540a627454fde34230fceec7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f742597d79813566c60972ea2a97d373ccc5057ae0c34b08ae31c3db4884587",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-03-28T05:53:34Z",
    "title_canon_sha256": "b7a8a653d0b2bb6a35aaa9e5d0f43c8dfb0f615ce2b4d1d973c8b1d4f5fee416"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09406",
    "kind": "arxiv",
    "version": 1
  }
}