Pith Number

pith:LDAQKBAJ

pith:2012:LDAQKBAJM2KIPPYUUIXR4YCA2C

not attested not anchored not stored refs pending

Recovering the Hamiltonian from spectral data

Cyrille Heriveaux (CMLS-EcolePolytechnique), Thierry Paul (CMLS-EcolePolytechnique)

arxiv:1202.5102 v5 · 2012-02-23 · math-ph · math.MP · 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{LDAQKBAJM2KIPPYUUIXR4YCA2C}

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	2026-05-18T03:35:54.241968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58c1050409669487bf14a22f1e6040d0afc5246c6eb70df6cf81f97f0fc2e065

Aliases

arxiv: 1202.5102 · arxiv_version: 1202.5102v5 · doi: 10.48550/arxiv.1202.5102 · pith_short_12: LDAQKBAJM2KI · pith_short_16: LDAQKBAJM2KIPPYU · pith_short_8: LDAQKBAJ

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/LDAQKBAJM2KIPPYUUIXR4YCA2C \
  | 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: 58c1050409669487bf14a22f1e6040d0afc5246c6eb70df6cf81f97f0fc2e065

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7e3fff2bd9fb7f515a014b548f22c756cb825a7616d81897967a32c6255ef58",
    "cross_cats_sorted": [
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2012-02-23T07:56:13Z",
    "title_canon_sha256": "52ca8e9a6e0db6518367b1a14be75682a178c04674b1f97560666491b7518ab3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5102",
    "kind": "arxiv",
    "version": 5
  }
}