Pith Number

pith:LFEKG7KZ

pith:2015:LFEKG7KZOI5JZZRWJJCZCEQ2OY

not attested not anchored not stored refs pending

The matching problem has no small symmetric SDP

Arefin Huq, Aurko Roy, Benjamin Weitz, Daniel Zink, G\'abor Braun, Jonah Brown-Cohen, Prasad Raghavendra, Sebastian Pokutta

arxiv:1504.00703 v5 · 2015-04-02 · 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{LFEKG7KZOI5JZZRWJJCZCEQ2OY}

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	2026-05-18T00:56:12.574825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5948a37d59723a9ce6364a4591121a7611684ea02d62c8fe36f86eee385833d7

Aliases

arxiv: 1504.00703 · arxiv_version: 1504.00703v5 · doi: 10.48550/arxiv.1504.00703 · pith_short_12: LFEKG7KZOI5J · pith_short_16: LFEKG7KZOI5JZZRW · pith_short_8: LFEKG7KZ

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/LFEKG7KZOI5JZZRWJJCZCEQ2OY \
  | 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: 5948a37d59723a9ce6364a4591121a7611684ea02d62c8fe36f86eee385833d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c1124b8aabc309d812fff6c898a8bcaaa7566c899d9693f261a469d0aa1c8f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-04-02T22:31:41Z",
    "title_canon_sha256": "ae64ec22db35aabbea0ee5ee67bc8d7efc7efd87a96868276ddb4b382355ba09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.00703",
    "kind": "arxiv",
    "version": 5
  }
}