Pith Number

pith:CCFRI5XK

pith:2024:CCFRI5XK7EYNWJETT4KQHMVY3Q

not attested not anchored not stored refs pending

Quantum algorithms for Hopcroft's problem

Aleksandrs Belovs, Jevg\=enijs Vihrovs, Vladimirs Andrejevs

arxiv:2405.01160 v1 · 2024-05-02 · quant-ph · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CCFRI5XK7EYNWJETT4KQHMVY3Q}

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	2026-07-05T08:14:31.320886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

108b1476eaf930db24939f1503b2b8dc32613970d21d28498831df7303cc59e3

Aliases

arxiv: 2405.01160 · arxiv_version: 2405.01160v1 · doi: 10.48550/arxiv.2405.01160 · pith_short_12: CCFRI5XK7EYN · pith_short_16: CCFRI5XK7EYNWJET · pith_short_8: CCFRI5XK

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/CCFRI5XK7EYNWJETT4KQHMVY3Q \
  | 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: 108b1476eaf930db24939f1503b2b8dc32613970d21d28498831df7303cc59e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21abaf900e0087a05c561bd1b9a2bbceafedcfb8a48cb79863d7f4fe6c090f0f",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2024-05-02T10:29:06Z",
    "title_canon_sha256": "089d06349299592636f5df040de84904158464921343d4e6b4d76038d2519175"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2405.01160",
    "kind": "arxiv",
    "version": 1
  }
}