Pith Number

pith:GHBV5R5K

pith:2017:GHBV5R5KAO6NAJZIFEGZ7GOAA4

not attested not anchored not stored refs pending

On the tractability of optimization problems on H-graphs

Fedor V. Fomin, Jean-Florent Raymond, Petr A. Golovach

arxiv:1709.09737 v4 · 2017-09-27 · cs.DS · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GHBV5R5KAO6NAJZIFEGZ7GOAA4}

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	2026-07-05T00:42:51.247978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31c35ec7aa03bcd02728290d9f99c0072028a1856e10311b6ef70fd894548f6c

Aliases

arxiv: 1709.09737 · arxiv_version: 1709.09737v4 · doi: 10.48550/arxiv.1709.09737 · pith_short_12: GHBV5R5KAO6N · pith_short_16: GHBV5R5KAO6NAJZI · pith_short_8: GHBV5R5K

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/GHBV5R5KAO6NAJZIFEGZ7GOAA4 \
  | 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: 31c35ec7aa03bcd02728290d9f99c0072028a1856e10311b6ef70fd894548f6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "007735bee82b159bc6b3a968201c1579c765e5e111b07f8813cb3d4cca807891",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-09-27T21:21:56Z",
    "title_canon_sha256": "3ab886b715a23ed8038cb1100270d35b5b09cb48ec228967501f8b59c5d28c8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09737",
    "kind": "arxiv",
    "version": 4
  }
}