Pith Number

pith:CSAPU6EV

pith:2013:CSAPU6EVIWSZOTP3MLYVUG52DJ

not attested not anchored not stored refs pending

Some preconditioners for systems of linear inequalities

Javier Pena, Negar Soheili, Vera Roshchina

arxiv:1306.5287 v1 · 2013-06-22 · math.OC · math.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{CSAPU6EVIWSZOTP3MLYVUG52DJ}

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	2026-05-18T03:20:08.642060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1480fa789545a5974dfb62f15a1bba1a7bfb29efbb011f5505cdf93957fbd609

Aliases

arxiv: 1306.5287 · arxiv_version: 1306.5287v1 · doi: 10.48550/arxiv.1306.5287 · pith_short_12: CSAPU6EVIWSZ · pith_short_16: CSAPU6EVIWSZOTP3 · pith_short_8: CSAPU6EV

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/CSAPU6EVIWSZOTP3MLYVUG52DJ \
  | 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: 1480fa789545a5974dfb62f15a1bba1a7bfb29efbb011f5505cdf93957fbd609

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45ac6bb7b689e09ef3eb8086e8c3c95f0c8cfb96a0bc9d6b60be61bf7eb101f4",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-06-22T03:55:31Z",
    "title_canon_sha256": "c5e2226bc5e8c0687ab4ce5f0b8832399eb1ea7f6cf82fecd4ee4d89bf73898f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5287",
    "kind": "arxiv",
    "version": 1
  }
}