Pith Number

pith:LJGREN4F

pith:2022:LJGREN4FNUBXC5DGNHCXBKI2KM

not attested not anchored not stored refs pending

The QAOA gets stuck starting from a good classical string

Daniel Ranard, Edward Farhi, Eugene Tang, Madelyn Cain, Sam Gutmann

arxiv:2207.05089 v2 · 2022-07-11 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LJGREN4FNUBXC5DGNHCXBKI2KM}

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	2026-07-05T06:28:31.535032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a4d1237856d0371746669c570a91a5312b5fa645aaf814c66dc821258bd15a8

Aliases

arxiv: 2207.05089 · arxiv_version: 2207.05089v2 · doi: 10.48550/arxiv.2207.05089 · pith_short_12: LJGREN4FNUBX · pith_short_16: LJGREN4FNUBXC5DG · pith_short_8: LJGREN4F

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/LJGREN4FNUBXC5DGNHCXBKI2KM \
  | 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: 5a4d1237856d0371746669c570a91a5312b5fa645aaf814c66dc821258bd15a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d512b1de69020d61b53fa6a2857ad262d3f85a763e7be5a177657843aed7d721",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-07-11T18:00:01Z",
    "title_canon_sha256": "7269b2746e39bb3c72b2b1ab5f7542c322363df5c43046ed47ce04b215388920"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.05089",
    "kind": "arxiv",
    "version": 2
  }
}