Pith Number

pith:BSM6MSD5

pith:2020:BSM6MSD53VZK6BBYSOOUDYAT6S

not attested not anchored not stored refs pending

Condition numbers of the mixed least squares-total least squares problem: revisited

Dongmei Shen, Qian Zhang, Qiaohua Liu

arxiv:2012.01666 v1 · 2020-12-03 · math.NA · cs.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{BSM6MSD53VZK6BBYSOOUDYAT6S}

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	2026-07-05T01:56:48.850849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c99e6487ddd72af0438939d41e013f4bea9bb96048dcfdb17fc72d5b10a0d2e

Aliases

arxiv: 2012.01666 · arxiv_version: 2012.01666v1 · doi: 10.48550/arxiv.2012.01666 · pith_short_12: BSM6MSD53VZK · pith_short_16: BSM6MSD53VZK6BBY · pith_short_8: BSM6MSD5

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/BSM6MSD53VZK6BBYSOOUDYAT6S \
  | 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: 0c99e6487ddd72af0438939d41e013f4bea9bb96048dcfdb17fc72d5b10a0d2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b605de3b7788613d9c4a6e2be1553d1264f30fee73067bf64d244a652cac19b2",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-12-03T02:50:45Z",
    "title_canon_sha256": "6712d26bf6b6fa60ee0ef9cac2d6e9e3eef796b056d0a8653c3a4dfddd47ff9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.01666",
    "kind": "arxiv",
    "version": 1
  }
}