Pith Number

pith:GXQTEXG3

pith:2008:GXQTEXG33X2XPAEJ7TJSSRHRN2

not attested not anchored not stored refs pending

Effective Constraints for Quantum Systems

Artur Tsobanjan, Aureliano Skirzewski, Barbara Sandhoefer, Martin Bojowald

arxiv:0804.3365 v1 · 2008-04-21 · math-ph · gr-qc · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GXQTEXG33X2XPAEJ7TJSSRHRN2}

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	2026-07-04T15:39:22.063852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35e1325cdbddf5778089fcd32944f16e90062e663f57f2517f968d3fca415bf7

Aliases

arxiv: 0804.3365 · arxiv_version: 0804.3365v1 · doi: 10.48550/arxiv.0804.3365 · pith_short_12: GXQTEXG33X2X · pith_short_16: GXQTEXG33X2XPAEJ · pith_short_8: GXQTEXG3

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/GXQTEXG33X2XPAEJ7TJSSRHRN2 \
  | 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: 35e1325cdbddf5778089fcd32944f16e90062e663f57f2517f968d3fca415bf7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a0bc98b56ec613ea2f953c25a6c69cf8fef8258487f3526d844a0ed1df3005f",
    "cross_cats_sorted": [
      "gr-qc",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-04-21T17:15:46Z",
    "title_canon_sha256": "bc738ca691dd19dedcd83cbb161fbada1ff841ae6e9b9ecd0e8162d20cc7dac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3365",
    "kind": "arxiv",
    "version": 1
  }
}