Pith Number

pith:5WAXR3WN

pith:2021:5WAXR3WNBVZZDA3TNCXLCEAGB4

not attested not anchored not stored refs pending

Regularized Kaczmarz Algorithms for Tensor Recovery

Jing Qin, Xuemei Chen

arxiv:2102.06852 v1 · 2021-02-13 · math.OC · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5WAXR3WNBVZZDA3TNCXLCEAGB4}

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	2026-07-05T02:14:58.961115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed8178eecd0d7391837368aeb110060f1f54419f4e2e950028bc1a73447c34af

Aliases

arxiv: 2102.06852 · arxiv_version: 2102.06852v1 · doi: 10.48550/arxiv.2102.06852 · pith_short_12: 5WAXR3WNBVZZ · pith_short_16: 5WAXR3WNBVZZDA3T · pith_short_8: 5WAXR3WN

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/5WAXR3WNBVZZDA3TNCXLCEAGB4 \
  | 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: ed8178eecd0d7391837368aeb110060f1f54419f4e2e950028bc1a73447c34af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fbedde2aa6a53443a2a2eedb5b82c761395d1b640586f8e632267d322f5f131",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-02-13T02:57:18Z",
    "title_canon_sha256": "a9a1d628b4b7ad694b78885db0bd028d6f2d4f285a96c01fd1c14e81b766e9e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.06852",
    "kind": "arxiv",
    "version": 1
  }
}