Pith Number

pith:5FRFXYYK

pith:2015:5FRFXYYK35U7PNVXWJPYRS5FMY

not attested not anchored not stored refs pending

How To Tame Your Sparsity Constraints

Jose A. Lopez

arxiv:1506.00300 v1 · 2015-05-31 · math.OC · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5FRFXYYK35U7PNVXWJPYRS5FMY}

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	2026-05-18T01:59:54.924011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9625be30adf69f7b6b7b25f88cba56631ea232872c5d1e34efbf33619d5a04c

Aliases

arxiv: 1506.00300 · arxiv_version: 1506.00300v1 · doi: 10.48550/arxiv.1506.00300 · pith_short_12: 5FRFXYYK35U7 · pith_short_16: 5FRFXYYK35U7PNVX · pith_short_8: 5FRFXYYK

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/5FRFXYYK35U7PNVXWJPYRS5FMY \
  | 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: e9625be30adf69f7b6b7b25f88cba56631ea232872c5d1e34efbf33619d5a04c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0adb71a87ee927805adfee925d5d11d977d1f6e0440548d92b24c46c21bbd18a",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-05-31T22:47:27Z",
    "title_canon_sha256": "cbbe34f0d5ba0c805aa20d3e67ed09a6f1ad46515181811d0403dc06123d6eaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.00300",
    "kind": "arxiv",
    "version": 1
  }
}