Pith Number

pith:RY3QWH45

pith:2018:RY3QWH453X3S6NFEC7QDXEYSG5

not attested not anchored not stored refs pending

Phase retrieval with sparse phase constraint

D. Russell Luke, Hieu Thao Nguyen, Michel Verhaegen, Oleg Soloviev

arxiv:1804.01878 v2 · 2018-04-04 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RY3QWH453X3S6NFEC7QDXEYSG5}

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	2026-05-17T23:55:29.484872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e370b1f9dddf72f34a417e03b9312376d6ff0b4b99c22f39367f6999a6c4749

Aliases

arxiv: 1804.01878 · arxiv_version: 1804.01878v2 · doi: 10.48550/arxiv.1804.01878 · pith_short_12: RY3QWH453X3S · pith_short_16: RY3QWH453X3S6NFE · pith_short_8: RY3QWH45

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/RY3QWH453X3S6NFEC7QDXEYSG5 \
  | 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: 8e370b1f9dddf72f34a417e03b9312376d6ff0b4b99c22f39367f6999a6c4749

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0478c088102dcc900b56d07c53360989ccbd4d4c558ede6492bc040fb504428d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-04-04T15:52:50Z",
    "title_canon_sha256": "8dfef35fd4bf14c5af88cd5261545ad47f58022e7f06b3e2c92bd0035370316e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01878",
    "kind": "arxiv",
    "version": 2
  }
}