Pith Number

pith:A5RZPDNP

pith:2021:A5RZPDNPRA2QD6D7XCMYJRJO5O

not attested not anchored not stored refs pending

Solving phase retrieval with random initial guess is nearly as good as by spectral initialization

Dong Li, Jianfeng Cai, Meng Huang, Yang Wang

arxiv:2101.03540 v1 · 2021-01-10 · cs.IT · cs.NA · math.IT · math.NA · 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{A5RZPDNPRA2QD6D7XCMYJRJO5O}

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	2026-07-05T02:05:51.182045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0763978daf883501f87fb89984c52eebaefe553564577f715f9bcd87553cebf7

Aliases

arxiv: 2101.03540 · arxiv_version: 2101.03540v1 · doi: 10.48550/arxiv.2101.03540 · pith_short_12: A5RZPDNPRA2Q · pith_short_16: A5RZPDNPRA2QD6D7 · pith_short_8: A5RZPDNP

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/A5RZPDNPRA2QD6D7XCMYJRJO5O \
  | 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: 0763978daf883501f87fb89984c52eebaefe553564577f715f9bcd87553cebf7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e11f0312f3d67e5d666d3ca9c570e9472da9dff09c25c8adb2ae2b65949c6a9",
    "cross_cats_sorted": [
      "cs.NA",
      "math.IT",
      "math.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2021-01-10T13:06:12Z",
    "title_canon_sha256": "2b30163a709f3210968578b28ce2edbb96d17b7134573b4f00424f5553fabe7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.03540",
    "kind": "arxiv",
    "version": 1
  }
}