Pith Number

pith:2IKOYKZA

pith:2018:2IKOYKZAKPIG6NRASX2BQFQZF4

not attested not anchored not stored refs pending

On the Complexity Landscape of Connected f -Factor Problems

C. S. Rahul, M. S. Ramanujan, N. S. Narayanaswamy, R. Ganian, S. Ordyniak

arxiv:1812.02037 v1 · 2018-12-05 · 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{2IKOYKZAKPIG6NRASX2BQFQZF4}

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	2026-05-17T23:58:59.908207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d214ec2b2053d06f362095f41816192f20da7df1f97293c7e1d2901a7f7936c7

Aliases

arxiv: 1812.02037 · arxiv_version: 1812.02037v1 · doi: 10.48550/arxiv.1812.02037 · pith_short_12: 2IKOYKZAKPIG · pith_short_16: 2IKOYKZAKPIG6NRA · pith_short_8: 2IKOYKZA

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/2IKOYKZAKPIG6NRASX2BQFQZF4 \
  | 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: d214ec2b2053d06f362095f41816192f20da7df1f97293c7e1d2901a7f7936c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae78d15a6f6290b2b77d4405abfafad8d336c1de1114471b257b1763bbdb0359",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-12-05T15:20:37Z",
    "title_canon_sha256": "39b62ec7007822518bb9473d1629c514400d481db868b1b91bcf3953c9efb368"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02037",
    "kind": "arxiv",
    "version": 1
  }
}