Pith Number

pith:5IUYEUQZ

pith:2024:5IUYEUQZKD2PF4DIXMMYIDOCV3

not attested not anchored not stored refs pending

Projection, Degeneracy, and Singularity Degree for Spectrahedra

David Torregrosa-Bel\'en, Haesol Im, Henry Wolkowicz, Woosuk L. Jung

arxiv:2407.06408 v2 · 2024-07-08 · 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{5IUYEUQZKD2PF4DIXMMYIDOCV3}

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.

Cited by

1 paper in Pith

A semi-smooth Newton method for the nonlinear conic problem with generalized simplicial cones

Receipt and verification

First computed	2026-06-29T01:15:01.814446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea2982521950f4f2f068bb19840dc2aed4029ef74a5dc7d804efcc889863265d

Aliases

arxiv: 2407.06408 · arxiv_version: 2407.06408v2 · doi: 10.48550/arxiv.2407.06408 · pith_short_12: 5IUYEUQZKD2P · pith_short_16: 5IUYEUQZKD2PF4DI · pith_short_8: 5IUYEUQZ

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/5IUYEUQZKD2PF4DIXMMYIDOCV3 \
  | 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: ea2982521950f4f2f068bb19840dc2aed4029ef74a5dc7d804efcc889863265d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98e2794452fa0f997f3952fcc8e8d8f994dae70d6dee0d6a46d3c4482ca810de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2024-07-08T21:29:28Z",
    "title_canon_sha256": "368ede7b221e7cf87696c40b492da0dfe43801478a8333551afa8a6c1e94873b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2407.06408",
    "kind": "arxiv",
    "version": 2
  }
}