Pith Number

pith:UTSJ6A7V

pith:2007:UTSJ6A7VECMSXAPL22SRYZ5XWX

not attested not anchored not stored refs pending

SDLS: a Matlab package for solving conic least-squares problems

CVUT), Didier Henrion (LAAS, Jerome Malick (LJK)

arxiv:0709.2556 v1 · 2007-09-17 · 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{UTSJ6A7VECMSXAPL22SRYZ5XWX}

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	2026-07-04T15:04:18.637399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4e49f03f520992b81ebd6a51c67b7b5f06475c9fc7d74887630f1e2825736a4

Aliases

arxiv: 0709.2556 · arxiv_version: 0709.2556v1 · doi: 10.48550/arxiv.0709.2556 · pith_short_12: UTSJ6A7VECMS · pith_short_16: UTSJ6A7VECMSXAPL · pith_short_8: UTSJ6A7V

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/UTSJ6A7VECMSXAPL22SRYZ5XWX \
  | 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: a4e49f03f520992b81ebd6a51c67b7b5f06475c9fc7d74887630f1e2825736a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53b14c50df22fba4c7c2df596c380505bcae80b60441a59acb86016097d6e8bc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OC",
    "submitted_at": "2007-09-17T09:10:50Z",
    "title_canon_sha256": "eeccb19239b64d86a0beaf88821318797989c032693b8e4a924adfdaaecbd9fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2556",
    "kind": "arxiv",
    "version": 1
  }
}