Pith Number

pith:6NY2FYTO

pith:2015:6NY2FYTOG5RSHBWEVYKCYRJIVH

not attested not anchored not stored refs pending

Projected Wirtinger Gradient Descent for Low-Rank Hankel Matrix Completion in Spectral Compressed Sensing

Jian-Feng Cai, Suhui Liu, Weiyu Xu

arxiv:1507.03707 v1 · 2015-07-14 · cs.IT · cs.LG · math.IT · 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{6NY2FYTOG5RSHBWEVYKCYRJIVH}

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	2026-05-18T01:36:57.524045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f371a2e26e37632386c4ae142c4528a9cfe232150b19bccecf5829e88af8e009

Aliases

arxiv: 1507.03707 · arxiv_version: 1507.03707v1 · doi: 10.48550/arxiv.1507.03707 · pith_short_12: 6NY2FYTOG5RS · pith_short_16: 6NY2FYTOG5RSHBWE · pith_short_8: 6NY2FYTO

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/6NY2FYTOG5RSHBWEVYKCYRJIVH \
  | 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: f371a2e26e37632386c4ae142c4528a9cfe232150b19bccecf5829e88af8e009

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdad5c1fbd0798483aaa479badc85781740cc9cb3cf42b4a73cd34d7db46bc14",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-07-14T02:48:09Z",
    "title_canon_sha256": "1a5b2ac6ee3b6a8a1a75d0143a26131a97dfce46a89b9c261e3c30258fbae22f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03707",
    "kind": "arxiv",
    "version": 1
  }
}