Pith Number

pith:IZ3SCRXR

pith:2009:IZ3SCRXRCPU4MCWADJMZPOUQZX

not attested not anchored not stored refs pending

Metric approach to quantum constraints

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

arxiv:0903.5261 v1 · 2009-03-30 · 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{IZ3SCRXRCPU4MCWADJMZPOUQZX}

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	2026-05-18T03:13:34.419462Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46772146f113e9c60ac01a5997ba90cdc5f64343192a89ce40aca381cd6d3014

Aliases

arxiv: 0903.5261 · arxiv_version: 0903.5261v1 · doi: 10.48550/arxiv.0903.5261 · pith_short_12: IZ3SCRXRCPU4 · pith_short_16: IZ3SCRXRCPU4MCWA · pith_short_8: IZ3SCRXR

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/IZ3SCRXRCPU4MCWADJMZPOUQZX \
  | 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: 46772146f113e9c60ac01a5997ba90cdc5f64343192a89ce40aca381cd6d3014

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8938d673c8dbf11184d4373cc02ca6150d7c5c09217baebf899344343f387893",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-03-30T16:43:22Z",
    "title_canon_sha256": "a5a35d17162615c08e45c6b1ce8731fc5e4f70e34368b99da314bf7868c81d2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.5261",
    "kind": "arxiv",
    "version": 1
  }
}