Pith Number

pith:25OKPOCU

pith:2013:25OKPOCUTBERI3456WFINKNJXY

not attested not anchored not stored refs pending

Spatial Search on Grids with Minimum Memory

Andris Ambainis, Nikolay Nahimov, Renato Portugal

arxiv:1312.0172 v1 · 2013-12-01 · 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{25OKPOCUTBERI3456WFINKNJXY}

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	2026-05-18T01:30:26.027172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d75ca7b8549849146f9df58a86a9a9be3cbeffdebf779df89cc60a8d914c1f41

Aliases

arxiv: 1312.0172 · arxiv_version: 1312.0172v1 · doi: 10.48550/arxiv.1312.0172 · pith_short_12: 25OKPOCUTBER · pith_short_16: 25OKPOCUTBERI345 · pith_short_8: 25OKPOCU

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/25OKPOCUTBERI3456WFINKNJXY \
  | 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: d75ca7b8549849146f9df58a86a9a9be3cbeffdebf779df89cc60a8d914c1f41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea4d26351306fe411adc91aae914d151ff52190a091d358d0b444be66a8c8ed6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-12-01T01:57:20Z",
    "title_canon_sha256": "694436b64762d37dba149dfc844ce40033181442f6c6c543d11727af5912bd38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.0172",
    "kind": "arxiv",
    "version": 1
  }
}