Pith Number

pith:OZVULYXS

pith:2025:OZVULYXSZRDC4RJSN2AQ2C6GFU

not attested not anchored not stored refs pending

Sum-Of-Squares To Approximate Knapsack

Pravesh K. Kothari, Sherry Sarkar

arxiv:2502.13292 v1 · 2025-02-18 · cs.DS · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OZVULYXSZRDC4RJSN2AQ2C6GFU}

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	2026-07-05T10:16:45.066435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

766b45e2f2cc462e45326e810d0bc62d39af2ce6d35bac64860f680577fa4cc7

Aliases

arxiv: 2502.13292 · arxiv_version: 2502.13292v1 · doi: 10.48550/arxiv.2502.13292 · pith_short_12: OZVULYXSZRDC · pith_short_16: OZVULYXSZRDC4RJS · pith_short_8: OZVULYXS

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/OZVULYXSZRDC4RJSN2AQ2C6GFU \
  | 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: 766b45e2f2cc462e45326e810d0bc62d39af2ce6d35bac64860f680577fa4cc7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "396536173e56a591fad7a3b13949ca8f0d952ada7e32917c8a56e7e58887d46b",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2025-02-18T21:23:03Z",
    "title_canon_sha256": "4b0c73ceb45fc0efb97098553d0042f2f262739d181ad784c75a304a82308242"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13292",
    "kind": "arxiv",
    "version": 1
  }
}