Pith Number

pith:OZEH7XAK

pith:2015:OZEH7XAK5JS2LL45RXSIWRWDGF

not attested not anchored not stored refs pending

Polynomial Kernels for Weighted Problems

Heiko R\"oglin, Matthias Mnich, Michael Etscheid, Stefan Kratsch

arxiv:1507.03439 v1 · 2015-07-13 · 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{OZEH7XAK5JS2LL45RXSIWRWDGF}

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	2026-05-18T01:36:58.828890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76487fdc0aea65a5af9d8de48b46c3317b134d6583064de6df616fd61721bd03

Aliases

arxiv: 1507.03439 · arxiv_version: 1507.03439v1 · doi: 10.48550/arxiv.1507.03439 · pith_short_12: OZEH7XAK5JS2 · pith_short_16: OZEH7XAK5JS2LL45 · pith_short_8: OZEH7XAK

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/OZEH7XAK5JS2LL45RXSIWRWDGF \
  | 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: 76487fdc0aea65a5af9d8de48b46c3317b134d6583064de6df616fd61721bd03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e628466e59ccd235473d4f8765815795ecab3fc4e08502077decc08b055571cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-07-13T13:15:14Z",
    "title_canon_sha256": "2f28d97759d350b62968509a5858d0a52e1f2219c702b2019449cafc146c60f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03439",
    "kind": "arxiv",
    "version": 1
  }
}