Pith Number

pith:NC4IDJBX

pith:2019:NC4IDJBXB5AKPQC5WULLGRL3SK

not attested not anchored not stored refs pending

A note on Douglas-Rachford, gradients, and phase retrieval

Eitan Levin, Tamir Bendory

arxiv:1911.13179 v2 · 2019-11-29 · cs.IT · eess.SP · 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{NC4IDJBXB5AKPQC5WULLGRL3SK}

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.

Cited by

1 paper in Pith

Phase Retrieval via Gain-Based Photonic XY-Hamiltonian Optimization

Receipt and verification

First computed	2026-07-05T01:07:51.441111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68b881a4370f40a7c05db516b3457b92ab4d82f057492c8a432d30f07847b5f5

Aliases

arxiv: 1911.13179 · arxiv_version: 1911.13179v2 · doi: 10.48550/arxiv.1911.13179 · pith_short_12: NC4IDJBXB5AK · pith_short_16: NC4IDJBXB5AKPQC5 · pith_short_8: NC4IDJBX

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/NC4IDJBXB5AKPQC5WULLGRL3SK \
  | 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: 68b881a4370f40a7c05db516b3457b92ab4d82f057492c8a432d30f07847b5f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3aa25ed35e57d88a704a11c0498e34a9bd0f21dd0e6960fabab47d4ea99e58d8",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-11-29T16:24:54Z",
    "title_canon_sha256": "cf936a7cc4538eebffc721331cf583049029b7a10d111140a8c4cce2159151ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.13179",
    "kind": "arxiv",
    "version": 2
  }
}