Pith Number

pith:QUSL7KND

pith:2020:QUSL7KND34TRCL7VPBKLHGY5IC

not attested not anchored not stored refs pending

Quantum algorithms for computational geometry problems

Andris Ambainis, Nikita Larka

arxiv:2004.08949 v1 · 2020-04-19 · cs.CG · cs.CC · cs.DS · 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{QUSL7KND34TRCL7VPBKLHGY5IC}

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	2026-07-05T00:56:11.684381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8524bfa9a3df27112ff57854b39b1d409d45aa94dc3fa444bff52114d158617f

Aliases

arxiv: 2004.08949 · arxiv_version: 2004.08949v1 · doi: 10.48550/arxiv.2004.08949 · pith_short_12: QUSL7KND34TR · pith_short_16: QUSL7KND34TRCL7V · pith_short_8: QUSL7KND

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/QUSL7KND34TRCL7VPBKLHGY5IC \
  | 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: 8524bfa9a3df27112ff57854b39b1d409d45aa94dc3fa444bff52114d158617f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1c5ff9f31384bab169c4cf4f5db67ff6bbe5788d77455f2da627234a96b69a0",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2020-04-19T20:01:50Z",
    "title_canon_sha256": "9b49ca65d36a3822e712c594b610dbde2d94875d36f64b5469a9ea4227179b41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.08949",
    "kind": "arxiv",
    "version": 1
  }
}