Pith Number

pith:NKDAUKBD

pith:2017:NKDAUKBDOKBG5G27ECEV35HJ7Z

not attested not anchored not stored refs pending

Complete Facial Reduction in One Step for Spectrahedra

Henry Wolkowicz, Hugo Woerdeman, Stefan Sremac

arxiv:1710.07410 v1 · 2017-10-20 · 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{NKDAUKBDOKBG5G27ECEV35HJ7Z}

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	2026-05-18T00:32:24.910785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a860a282372826e9b5f20895df4e9fe621b3e8d9c96409d956a857f1ef31db6

Aliases

arxiv: 1710.07410 · arxiv_version: 1710.07410v1 · doi: 10.48550/arxiv.1710.07410 · pith_short_12: NKDAUKBDOKBG · pith_short_16: NKDAUKBDOKBG5G27 · pith_short_8: NKDAUKBD

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/NKDAUKBDOKBG5G27ECEV35HJ7Z \
  | 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: 6a860a282372826e9b5f20895df4e9fe621b3e8d9c96409d956a857f1ef31db6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "892f5af5eefabcbe5207ddf2a2a25a5a43ae4d785119b9134d1ef0c7cb6326b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-10-20T04:12:24Z",
    "title_canon_sha256": "e8220d08194b15a57a7245e57c05a4699b08176a84c92b4143383c0699cee4a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07410",
    "kind": "arxiv",
    "version": 1
  }
}