Pith Number

pith:5MC7EUHA

pith:2009:5MC7EUHATILELUI6YRC2VJMA6V

not attested not anchored not stored refs pending

How well can you know the edge of a quantum pyramid?

Berthold-Georg Englert, Jaroslav \v{R}eh\'a\v{c}ek

arxiv:0905.0510 v1 · 2009-05-04 · 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{5MC7EUHATILELUI6YRC2VJMA6V}

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	2026-05-18T02:13:47.696344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb05f250e09a1645d11ec445aaa580f566e521ff443528bb45ca1e42e35b2ca5

Aliases

arxiv: 0905.0510 · arxiv_version: 0905.0510v1 · doi: 10.48550/arxiv.0905.0510 · pith_short_12: 5MC7EUHATILE · pith_short_16: 5MC7EUHATILELUI6 · pith_short_8: 5MC7EUHA

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/5MC7EUHATILELUI6YRC2VJMA6V \
  | 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: eb05f250e09a1645d11ec445aaa580f566e521ff443528bb45ca1e42e35b2ca5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02f723be68f45bb75e2d390addfc967ee0d89e5fe8282e05171089baceff934a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-05-04T23:53:57Z",
    "title_canon_sha256": "8429b0d22dbea5b2eac87ab0ce02d18b98bdb4eb150c1aa0f8c43f933e51d75a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0510",
    "kind": "arxiv",
    "version": 1
  }
}