Pith Number

pith:QZYNU5DK

pith:2017:QZYNU5DKK7CYTD5Y42MZCEHKDT

not attested not anchored not stored refs pending

A Rewriting System for Convex Optimization Problems

Akshay Agrawal, Robin Verschueren, Stephen Boyd, Steven Diamond

arxiv:1709.04494 v2 · 2017-09-13 · math.OC · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QZYNU5DKK7CYTD5Y42MZCEHKDT}

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	2026-05-17T23:52:34.252467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8670da746a57c5898fb8e6999110ea1cce82ac7657decd4ec64072ec40332160

Aliases

arxiv: 1709.04494 · arxiv_version: 1709.04494v2 · doi: 10.48550/arxiv.1709.04494 · pith_short_12: QZYNU5DKK7CY · pith_short_16: QZYNU5DKK7CYTD5Y · pith_short_8: QZYNU5DK

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/QZYNU5DKK7CYTD5Y42MZCEHKDT \
  | 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: 8670da746a57c5898fb8e6999110ea1cce82ac7657decd4ec64072ec40332160

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fe5591394c2c7017d53d96b0ea7c514bd2b8a10b1a1ebd07ca9142ac4522236",
    "cross_cats_sorted": [
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-09-13T18:31:24Z",
    "title_canon_sha256": "c491fcccd7fc2c793cf61b5ebbd206bcb01b3b940c05e617c4cd1a81d69cf5c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.04494",
    "kind": "arxiv",
    "version": 2
  }
}