Pith Number

pith:OSWJ4M6A

pith:2016:OSWJ4M6AXGPA6QSPUKJCXM5HAL

not attested not anchored not stored refs pending

Flexible sparse regularization

Dirk A. Lorenz, Elena Resmerita

arxiv:1601.04429 v1 · 2016-01-18 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OSWJ4M6AXGPA6QSPUKJCXM5HAL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:54:40.984119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74ac9e33c0b99e0f424fa2922bb3a702e71f028012f781e50d71a01a1012333b

Aliases

arxiv: 1601.04429 · arxiv_version: 1601.04429v1 · doi: 10.48550/arxiv.1601.04429 · pith_short_12: OSWJ4M6AXGPA · pith_short_16: OSWJ4M6AXGPA6QSP · pith_short_8: OSWJ4M6A

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/OSWJ4M6AXGPA6QSPUKJCXM5HAL \
  | 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: 74ac9e33c0b99e0f424fa2922bb3a702e71f028012f781e50d71a01a1012333b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9e295f20d0d7bcbe536fe0cf48df969af2659aae306c9aa807e8283d7de1caf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-01-18T08:51:29Z",
    "title_canon_sha256": "5f4b151d57be031a7220ef1a91d117fd2100575c43fbb92bf4c26667378c036b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04429",
    "kind": "arxiv",
    "version": 1
  }
}