Pith Number

pith:PU2TXYW6

pith:2009:PU2TXYW6MW5BI64H4C6WUCPERH

not attested not anchored not stored refs pending

Backpropagation training in adaptive quantum networks

Christopher Altman, Rom\`an R. Zapatrin

arxiv:0903.4416 v1 · 2009-03-25 · q-bio.NC · cond-mat.dis-nn · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PU2TXYW6MW5BI64H4C6WUCPERH}

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	2026-05-18T02:14:25.940962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d353be2de65ba147b87e0bd6a09e489fa1cd06de371e8e9fb8b769d782a5655

Aliases

arxiv: 0903.4416 · arxiv_version: 0903.4416v1 · doi: 10.48550/arxiv.0903.4416 · pith_short_12: PU2TXYW6MW5B · pith_short_16: PU2TXYW6MW5BI64H · pith_short_8: PU2TXYW6

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/PU2TXYW6MW5BI64H4C6WUCPERH \
  | 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: 7d353be2de65ba147b87e0bd6a09e489fa1cd06de371e8e9fb8b769d782a5655

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e83cbc81cd44cd0fb6376ffcc39c114bfdeea6dcf513727a07f8e059ec9bae8",
    "cross_cats_sorted": [
      "cond-mat.dis-nn",
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2009-03-25T18:22:19Z",
    "title_canon_sha256": "38b45a5fcd5f34bf5b37e46ecabeeb0ef3d4a0334fa09367ece1fb085baba44a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4416",
    "kind": "arxiv",
    "version": 1
  }
}