Pith Number

pith:EDUAS6RP

pith:2013:EDUAS6RPI2ALOQRGKLT34WEF63

not attested not anchored not stored refs pending

On the parameterized complexity of cutting a few vertices from a graph

Fedor V. Fomin, Janne H. Korhonen, Petr A. Golovach

arxiv:1304.6189 v2 · 2013-04-23 · 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{EDUAS6RPI2ALOQRGKLT34WEF63}

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	2026-05-18T03:11:46.715668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20e8097a2f4680b7422652e7be5885f6d2a5818b27c0f85de6ce26444906449b

Aliases

arxiv: 1304.6189 · arxiv_version: 1304.6189v2 · doi: 10.48550/arxiv.1304.6189 · pith_short_12: EDUAS6RPI2AL · pith_short_16: EDUAS6RPI2ALOQRG · pith_short_8: EDUAS6RP

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/EDUAS6RPI2ALOQRGKLT34WEF63 \
  | 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: 20e8097a2f4680b7422652e7be5885f6d2a5818b27c0f85de6ce26444906449b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73cf99ebd43e2be5dfc04bed6ba5620e32b957c5282f6ae43a840543e7a66bb2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-04-23T07:38:34Z",
    "title_canon_sha256": "485472b2d6de0437aa2f70b3ad1862fbf46ae2e3d8e05f47a787d8fc94d34e35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6189",
    "kind": "arxiv",
    "version": 2
  }
}