Pith Number

pith:KEX2VY52

pith:2013:KEX2VY525UPVXZK2MOOGUSW7FM

not attested not anchored not stored refs pending

A faster FPT algorithm for Bipartite Contraction

D\'aniel Marx, Sylvain Guillemot

arxiv:1305.2743 v3 · 2013-05-13 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KEX2VY525UPVXZK2MOOGUSW7FM}

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	2026-05-18T03:14:17.147605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

512faae3baed1f5be55a639c6a4adf2b010b6ac8ff272ff1cbeca9e0b619560a

Aliases

arxiv: 1305.2743 · arxiv_version: 1305.2743v3 · doi: 10.48550/arxiv.1305.2743 · pith_short_12: KEX2VY525UPV · pith_short_16: KEX2VY525UPVXZK2 · pith_short_8: KEX2VY52

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/KEX2VY525UPVXZK2MOOGUSW7FM \
  | 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: 512faae3baed1f5be55a639c6a4adf2b010b6ac8ff272ff1cbeca9e0b619560a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b069e31a3f93c909d96e3a6e819a95a1d9664f38f2d9221debaf889d9924806",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-05-13T11:25:01Z",
    "title_canon_sha256": "da6061e9e27d5fbfe93bb2a3edfe6ca1830cd3e1876147a11c6b4e4ec88c6fb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2743",
    "kind": "arxiv",
    "version": 3
  }
}