Pith Number

pith:QKQQHJIN

pith:2015:QKQQHJINMJ6GOTDYTVPSFFJ7LO

not attested not anchored not stored refs pending

A Faster Pseudopolynomial Time Algorithm for Subset Sum

Chao Xu, Konstantinos Koiliaris

arxiv:1507.02318 v3 · 2015-07-08 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QKQQHJINMJ6GOTDYTVPSFFJ7LO}

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	2026-05-18T00:55:25.723245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82a103a50d627c674c789d5f22953f5ba22fb709ea2c6870720f8963ad37f4ab

Aliases

arxiv: 1507.02318 · arxiv_version: 1507.02318v3 · doi: 10.48550/arxiv.1507.02318 · pith_short_12: QKQQHJINMJ6G · pith_short_16: QKQQHJINMJ6GOTDY · pith_short_8: QKQQHJIN

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/QKQQHJINMJ6GOTDYTVPSFFJ7LO \
  | 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: 82a103a50d627c674c789d5f22953f5ba22fb709ea2c6870720f8963ad37f4ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30ce6d463f7652dabc618cd15a573cdeb1c07cc56f2ba60a01fd22d2927244b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-07-08T21:38:20Z",
    "title_canon_sha256": "27f633e74883a0e10d66596b43788ae4e7638f4e99481f67574c0c15d96bfe6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02318",
    "kind": "arxiv",
    "version": 3
  }
}