Pith Number

pith:743JTHHF

pith:2014:743JTHHFCXGZ5INO7ZEAK7L7V2

not attested not anchored not stored refs pending

On Backdoors To Tractable Constraint Languages

Clement Carbonnel, Emmanuel Hebrard, Martin C. Cooper

arxiv:1404.3675 v2 · 2014-04-14 · cs.AI · 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{743JTHHFCXGZ5INO7ZEAK7L7V2}

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	2026-05-18T02:40:38.532241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff36999ce515cd9ea1aefe48057d7faea4a14eba51841fd12cec1042e81b4888

Aliases

arxiv: 1404.3675 · arxiv_version: 1404.3675v2 · doi: 10.48550/arxiv.1404.3675 · pith_short_12: 743JTHHFCXGZ · pith_short_16: 743JTHHFCXGZ5INO · pith_short_8: 743JTHHF

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/743JTHHFCXGZ5INO7ZEAK7L7V2 \
  | 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: ff36999ce515cd9ea1aefe48057d7faea4a14eba51841fd12cec1042e81b4888

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4004ff3697e62c97b9724b5ae8bd4391570fe05f0ee223452f20a0bd39e45763",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2014-04-14T18:13:23Z",
    "title_canon_sha256": "45346a7586365b3b8da4cb8cc47fda76d82fbd87fa23e0bc338ecd38d82eedf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.3675",
    "kind": "arxiv",
    "version": 2
  }
}