Pith Number

pith:QFCLFARS

pith:2025:QFCLFARSM35ST6ZBWGNSHRFE2U

not attested not anchored not stored refs pending

Feature Relevancy, Necessity and Usefulness: Complexity and Algorithms

Santiago Cifuentes, Tom\'as Capdevielle

arxiv:2505.09640 v1 · 2025-05-06 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QFCLFARSM35ST6ZBWGNSHRFE2U}

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	2026-07-05T11:03:26.473148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8144b2823266fb29fb21b19b23c4a4d50cc368bda4452384a09292c816705a82

Aliases

arxiv: 2505.09640 · arxiv_version: 2505.09640v1 · doi: 10.48550/arxiv.2505.09640 · pith_short_12: QFCLFARSM35S · pith_short_16: QFCLFARSM35ST6ZB · pith_short_8: QFCLFARS

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/QFCLFARSM35ST6ZBWGNSHRFE2U \
  | 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: 8144b2823266fb29fb21b19b23c4a4d50cc368bda4452384a09292c816705a82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30de75aff4cdd1e592ed083449cd5ccdb4f191053ebdce8252beebb072b6168f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-05-06T21:41:07Z",
    "title_canon_sha256": "eb2c01073ca14da97f8837c837cc84f074d23fb51d5dfd3f92fdb86fc6d29adb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.09640",
    "kind": "arxiv",
    "version": 1
  }
}