Pith Number

pith:P6WMHT55

pith:2025:P6WMHT55E7X6KN7WLUD6O3HNCB

not attested not anchored not stored refs pending

EF(X) Orientations: A Parameterized Complexity Perspective

Christos Pergaminelis, Edouard Nemery, Manolis Vasilakis, Minas Marios Sotiriou, Sotiris Kanellopoulos

arxiv:2512.25033 v2 · 2025-12-31 · 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{P6WMHT55E7X6KN7WLUD6O3HNCB}

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	2026-06-30T01:17:31.780922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7facc3cfbd27efe537f65d07e76ced104e5ba9501748c1bc3ef1f363a8f6b9ee

Aliases

arxiv: 2512.25033 · arxiv_version: 2512.25033v2 · doi: 10.48550/arxiv.2512.25033 · pith_short_12: P6WMHT55E7X6 · pith_short_16: P6WMHT55E7X6KN7W · pith_short_8: P6WMHT55

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/P6WMHT55E7X6KN7WLUD6O3HNCB \
  | 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: 7facc3cfbd27efe537f65d07e76ced104e5ba9501748c1bc3ef1f363a8f6b9ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e49681a6f933b59e3d6f456d3c6f9a9f75b55dd5062395fab12bfca8704bb488",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2025-12-31T18:30:48Z",
    "title_canon_sha256": "2908c9e60bc68ac4b18321a74f08bf8e7197f8e74e62e1f25e67f33a0fbd15e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.25033",
    "kind": "arxiv",
    "version": 2
  }
}