Pith Number

pith:UPX6A3CM

pith:2014:UPX6A3CMNC4VLRKVMXBMZACSND

not attested not anchored not stored refs pending

Some Results on Regularization of LSQR and CGLS for Large-Scale Discrete Ill-Posed Problems

Yi Huang, Zhongxiao Jia

arxiv:1412.1901 v3 · 2014-12-05 · 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{UPX6A3CMNC4VLRKVMXBMZACSND}

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	2026-05-18T02:28:47.392353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3efe06c4c68b955c55565c2cc805268df7ba8b73897ad1ef91b9bd36a3cab5f

Aliases

arxiv: 1412.1901 · arxiv_version: 1412.1901v3 · doi: 10.48550/arxiv.1412.1901 · pith_short_12: UPX6A3CMNC4V · pith_short_16: UPX6A3CMNC4VLRKV · pith_short_8: UPX6A3CM

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/UPX6A3CMNC4VLRKVMXBMZACSND \
  | 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: a3efe06c4c68b955c55565c2cc805268df7ba8b73897ad1ef91b9bd36a3cab5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfbab4b6ca4927d3874d56daf78fb738c2747b53b393ac3d57113c887f0ad69f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-12-05T06:42:02Z",
    "title_canon_sha256": "ad5ba91c7003b81c22051f0e2b9da274816116380779682c715a9a53ed65f92c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1901",
    "kind": "arxiv",
    "version": 3
  }
}