Pith Number

pith:H7E4EUH4

pith:2008:H7E4EUH477HNXDFZ7QWCMY2JYV

not attested not anchored not stored refs pending

Symplectic approach to quantum constraints

Anna C. T. Gustavsson, Dorje C. Brody, Lane P. Hughston

arxiv:0808.1068 v1 · 2008-08-07 · 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{H7E4EUH477HNXDFZ7QWCMY2JYV}

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	2026-05-18T02:26:45.824513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fc9c250fcffcedb8cb9fc2c266349c57cfdd42c99382b341b79ddf8329da4d5

Aliases

arxiv: 0808.1068 · arxiv_version: 0808.1068v1 · doi: 10.48550/arxiv.0808.1068 · pith_short_12: H7E4EUH477HN · pith_short_16: H7E4EUH477HNXDFZ · pith_short_8: H7E4EUH4

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/H7E4EUH477HNXDFZ7QWCMY2JYV \
  | 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: 3fc9c250fcffcedb8cb9fc2c266349c57cfdd42c99382b341b79ddf8329da4d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e9cd7cc238b006a3355303a7f5ebf4fac6c28463fafb27749bada6a2516223b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-08-07T16:26:52Z",
    "title_canon_sha256": "557b0976623a33c2c6f12e4cc68dee218f27442cb47482156097f3940e9fb739"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.1068",
    "kind": "arxiv",
    "version": 1
  }
}