Pith Number

pith:UTXAXX7O

pith:2015:UTXAXX7OA7DLQ5O2B2OHN54AYP

not attested not anchored not stored refs pending

Approximate Message Passing with Unitary Transformation

Jiangtao Xi, Qinghua Guo

arxiv:1504.04799 v1 · 2015-04-19 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UTXAXX7OA7DLQ5O2B2OHN54AYP}

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	2026-05-18T02:18:24.731340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4ee0bdfee07c6b875da0e9c76f780c3e2daf92f422ab568803e5f371741c34f

Aliases

arxiv: 1504.04799 · arxiv_version: 1504.04799v1 · doi: 10.48550/arxiv.1504.04799 · pith_short_12: UTXAXX7OA7DL · pith_short_16: UTXAXX7OA7DLQ5O2 · pith_short_8: UTXAXX7O

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/UTXAXX7OA7DLQ5O2B2OHN54AYP \
  | 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: a4ee0bdfee07c6b875da0e9c76f780c3e2daf92f422ab568803e5f371741c34f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e291a845b026f8beffe5960f5b6e83689155fe95a04ef03cb640574a970b5cd",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-19T06:06:46Z",
    "title_canon_sha256": "b2a6d7d15a50694741ccbc1446b574a750f9faa4da0318213224f7dd56d34e88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04799",
    "kind": "arxiv",
    "version": 1
  }
}