Pith Number

pith:A3XE5ZM2

pith:2012:A3XE5ZM265LKLUHTOIWJDGINEL

not attested not anchored not stored refs pending

Parameterized Proof Complexity and W[1]

Barnaby Martin

arxiv:1203.5323 v1 · 2012-03-23 · cs.LO · 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{A3XE5ZM265LKLUHTOIWJDGINEL}

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	2026-05-18T03:59:26.185241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06ee4ee59af756a5d0f3722c91990d22f590935ad4cc25291a8baa117dffe5a3

Aliases

arxiv: 1203.5323 · arxiv_version: 1203.5323v1 · doi: 10.48550/arxiv.1203.5323 · pith_short_12: A3XE5ZM265LK · pith_short_16: A3XE5ZM265LKLUHT · pith_short_8: A3XE5ZM2

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/A3XE5ZM265LKLUHTOIWJDGINEL \
  | 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: 06ee4ee59af756a5d0f3722c91990d22f590935ad4cc25291a8baa117dffe5a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfcef3c63c2281af1a314cc543197ce12d1ccc58717aa48c2eaa2d48019f90ee",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-03-23T19:10:20Z",
    "title_canon_sha256": "10ecde5e3cefddf66e8d1306d7f1e9bfd7a6b8ddf6fa1aaf571c4ee03ce0b4dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5323",
    "kind": "arxiv",
    "version": 1
  }
}