Pith Number

pith:DHQBQTVG

pith:2022:DHQBQTVGFHQ4FT22GM2V47FHWP

not attested not anchored not stored refs pending

Faster exact solution of sparse MaxCut and QUBO problems

Daniel Rehfeldt, Thorsten Koch, Yuji Shinano

arxiv:2202.02305 v1 · 2022-02-04 · math.OC · cs.DM · 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{DHQBQTVGFHQ4FT22GM2V47FHWP}

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	2026-07-05T03:54:10.470368Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19e0184ea629e1c2cf5a33355e7ca7b3d36c1ffe4cae38c54ce13ebe795b37de

Aliases

arxiv: 2202.02305 · arxiv_version: 2202.02305v1 · doi: 10.48550/arxiv.2202.02305 · pith_short_12: DHQBQTVGFHQ4 · pith_short_16: DHQBQTVGFHQ4FT22 · pith_short_8: DHQBQTVG

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/DHQBQTVGFHQ4FT22GM2V47FHWP \
  | 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: 19e0184ea629e1c2cf5a33355e7ca7b3d36c1ffe4cae38c54ce13ebe795b37de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "987ea07a1731375fadc25c3fce07b301bf376aeb403a81d45faee560c1a2bf12",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-02-04T18:42:05Z",
    "title_canon_sha256": "ba78c566381badfcb6fb90df8b681937e96ae98cd6ed9b3f2e906203c0e6f5fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.02305",
    "kind": "arxiv",
    "version": 1
  }
}