Pith Number

pith:XKOWCRVR

pith:2015:XKOWCRVREWMYKWPRJJRLGB3RAJ

not attested not anchored not stored refs pending

A Classification of Connected f -factor Problems inside NP

C.S. Rahul, N.S. Narayanaswamy

arxiv:1507.07856 v1 · 2015-07-28 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XKOWCRVREWMYKWPRJJRLGB3RAJ}

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	2026-05-18T01:36:11.754813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba9d6146b125998559f14a62b307710246cfded87a1be21d49e4e8271f19a36d

Aliases

arxiv: 1507.07856 · arxiv_version: 1507.07856v1 · doi: 10.48550/arxiv.1507.07856 · pith_short_12: XKOWCRVREWMY · pith_short_16: XKOWCRVREWMYKWPR · pith_short_8: XKOWCRVR

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/XKOWCRVREWMYKWPRJJRLGB3RAJ \
  | 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: ba9d6146b125998559f14a62b307710246cfded87a1be21d49e4e8271f19a36d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a466667da4adf005895c3dcea071d3d753432e90422b1c94829623dccd42417",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-07-28T17:21:06Z",
    "title_canon_sha256": "b992965cd39bf1dd96cf608a2af5b21825f2fb9b89e04f10291f3a95c4ce1b18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07856",
    "kind": "arxiv",
    "version": 1
  }
}