Pith Number

pith:IIAN4OZU

pith:2015:IIAN4OZU4K3APPJ4QRDDR5KCR7

not attested not anchored not stored refs pending

Dense Subset Sum may be the hardest

Jesper Nederlof, Mikko Koivisto, Per Austrin, Petteri Kaski

arxiv:1508.06019 v1 · 2015-08-25 · cs.DS · cs.CC · cs.DM · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IIAN4OZU4K3APPJ4QRDDR5KCR7}

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	2026-05-18T01:34:47.104358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4200de3b34e2b607bd3c844638f5428fc6e0c0db2390929ff924550a789f2a1e

Aliases

arxiv: 1508.06019 · arxiv_version: 1508.06019v1 · doi: 10.48550/arxiv.1508.06019 · pith_short_12: IIAN4OZU4K3A · pith_short_16: IIAN4OZU4K3APPJ4 · pith_short_8: IIAN4OZU

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/IIAN4OZU4K3APPJ4QRDDR5KCR7 \
  | 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: 4200de3b34e2b607bd3c844638f5428fc6e0c0db2390929ff924550a789f2a1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4593ae2e9022aad27b170fd9b5a54c0d9cef4ac892ba53e945ec95d90bbf0ef",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM",
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-08-25T03:14:53Z",
    "title_canon_sha256": "43e8b52e8d84f66b7b2f586b3b53832659ef5f22360d4fa9a4dcec6e993bfb26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.06019",
    "kind": "arxiv",
    "version": 1
  }
}