Pith Number

pith:YOABL4XH

pith:2020:YOABL4XHHPESLG24ALWQ6CWETW

not attested not anchored not stored refs pending

$L_1$-norm regularized $L_1$-norm best-fit line problem

J. Paul Brooks, Xiao Ling

arxiv:2010.04684 v3 · 2020-10-09 · 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{YOABL4XHHPESLG24ALWQ6CWETW}

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	2026-07-05T05:35:40.701128Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c38015f2e73bc9259b5c02ed0f0ac49dae6fb7d5302b6e3e46a55475c93cb6e7

Aliases

arxiv: 2010.04684 · arxiv_version: 2010.04684v3 · doi: 10.48550/arxiv.2010.04684 · pith_short_12: YOABL4XHHPES · pith_short_16: YOABL4XHHPESLG24 · pith_short_8: YOABL4XH

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/YOABL4XHHPESLG24ALWQ6CWETW \
  | 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: c38015f2e73bc9259b5c02ed0f0ac49dae6fb7d5302b6e3e46a55475c93cb6e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a3e05ed7d763e165d87184176e9d3f738d30818559bd8001119a34a085d5a6d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-10-09T17:07:52Z",
    "title_canon_sha256": "abcb24533b961f1cac49af5726bb5d7f7b7b528b2cebd380927e449668565193"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.04684",
    "kind": "arxiv",
    "version": 3
  }
}