Pith Number

pith:2ST6N7WP

pith:2010:2ST6N7WPI6H4DETBVWBWTMBFUJ

not attested not anchored not stored refs pending

All Ternary Permutation Constraint Satisfaction Problems Parameterized Above Average Have Kernels with Quadratic Numbers of Variables

Anders Yeo, Gregory Gutin, Leo van Iersel, Matthias Mnich

arxiv:1004.1956 v3 · 2010-04-12 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ST6N7WPI6H4DETBVWBWTMBFUJ}

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	2026-05-18T04:18:43.820069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4a7e6fecf478fc19261ad8369b025a247aeb6b1df82d09b150ac501dd1ca0a3

Aliases

arxiv: 1004.1956 · arxiv_version: 1004.1956v3 · doi: 10.48550/arxiv.1004.1956 · pith_short_12: 2ST6N7WPI6H4 · pith_short_16: 2ST6N7WPI6H4DETB · pith_short_8: 2ST6N7WP

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/2ST6N7WPI6H4DETBVWBWTMBFUJ \
  | 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: d4a7e6fecf478fc19261ad8369b025a247aeb6b1df82d09b150ac501dd1ca0a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa68952bd9786de3a801f0178b412b9789b9f6a9f50206f707db66942866c5dd",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2010-04-12T13:52:59Z",
    "title_canon_sha256": "ae737b770d47ff1b934eb4a7c692d3d2b4718e367348efb56e81e68b52425de1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1956",
    "kind": "arxiv",
    "version": 3
  }
}