Pith Number

pith:QV7KRAGR

pith:2019:QV7KRAGRGU5RCK2X6WZIYP2YPH

not attested not anchored not stored refs pending

Spectral Method for Phase Retrieval: an Expectation Propagation Perspective

Arian Maleki, Ji Xu, Junjie Ma, Rishabh Dudeja, Xiaodong Wang

arxiv:1903.02505 v2 · 2019-03-06 · 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{QV7KRAGRGU5RCK2X6WZIYP2YPH}

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	2026-07-05T01:34:04.011015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

857ea880d1353b112b57f5b28c3f5879ce413a28c99c7ea83defa326d00b0b8a

Aliases

arxiv: 1903.02505 · arxiv_version: 1903.02505v2 · doi: 10.48550/arxiv.1903.02505 · pith_short_12: QV7KRAGRGU5R · pith_short_16: QV7KRAGRGU5RCK2X · pith_short_8: QV7KRAGR

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/QV7KRAGRGU5RCK2X6WZIYP2YPH \
  | 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: 857ea880d1353b112b57f5b28c3f5879ce413a28c99c7ea83defa326d00b0b8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d24062cdedc55b171de5570494642975e3417dff453ee8915ae7db64d5a0403",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-03-06T17:26:47Z",
    "title_canon_sha256": "4b5cb19f7e94b903a6b21949884ddc8ae0276c6d074473acda7d39a777d9bfbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02505",
    "kind": "arxiv",
    "version": 2
  }
}