Pith Number

pith:HWUXWNIG

pith:2014:HWUXWNIGFBDTJGT7HDTULPSLOQ

not attested not anchored not stored refs pending

Semidefinite descriptions of the convex hull of rotation matrices

Alan S. Willsky, James Saunderson, Pablo A. Parrilo

arxiv:1403.4914 v1 · 2014-03-19 · 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{HWUXWNIGFBDTJGT7HDTULPSLOQ}

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	2026-05-18T01:36:48.379039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3da97b35062847349a7f38e745be4b742f0ef7b29926167e464061b972fe230f

Aliases

arxiv: 1403.4914 · arxiv_version: 1403.4914v1 · doi: 10.48550/arxiv.1403.4914 · pith_short_12: HWUXWNIGFBDT · pith_short_16: HWUXWNIGFBDTJGT7 · pith_short_8: HWUXWNIG

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/HWUXWNIGFBDTJGT7HDTULPSLOQ \
  | 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: 3da97b35062847349a7f38e745be4b742f0ef7b29926167e464061b972fe230f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ee8bf3b1ab044378830885e7af426efe7bf4a5f5972a8444445e42035ec5adb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-03-19T19:16:14Z",
    "title_canon_sha256": "6f6680896a733e3be247b684153b2cdd5e9976ea38f1eadf6b2357d879cfd2ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4914",
    "kind": "arxiv",
    "version": 1
  }
}