Pith Number

pith:J4EZY4VV

pith:2016:J4EZY4VVG75NVYH7PXJJKU4AUJ

not attested not anchored not stored refs pending

Finding Detours is Fixed-parameter Tractable

Fedor V. Fomin, Holger Dell, Ivona Bez\'akov\'a, Radu Curticapean

arxiv:1607.07737 v2 · 2016-07-26 · 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{J4EZY4VVG75NVYH7PXJJKU4AUJ}

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	2026-05-18T00:17:55.270939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f099c72b537fadae0ff7dd2955380a271b9da43003ae7c13780e9562eb5bb80

Aliases

arxiv: 1607.07737 · arxiv_version: 1607.07737v2 · doi: 10.48550/arxiv.1607.07737 · pith_short_12: J4EZY4VVG75N · pith_short_16: J4EZY4VVG75NVYH7 · pith_short_8: J4EZY4VV

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/J4EZY4VVG75NVYH7PXJJKU4AUJ \
  | 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: 4f099c72b537fadae0ff7dd2955380a271b9da43003ae7c13780e9562eb5bb80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cf3d7d0985acfa0bd51cbd0d616b4d0837bb795150b5ca93dadeb6c6f7ebec4",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-07-26T15:00:18Z",
    "title_canon_sha256": "cd825d72425f30d1fdb6f1bd2fe3ce7a6a13d9037e7fec0afdcecabba96c1a4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.07737",
    "kind": "arxiv",
    "version": 2
  }
}