Pith Number

pith:VIRDYD2X

pith:2017:VIRDYD2XO4UY5JC3XPL4E2UWX2

not attested not anchored not stored refs pending

Corrigendum to "SPN graphs: when copositive $=$ SPN"

Naomi Shaked-Monderer

arxiv:1712.05115 v1 · 2017-12-14 · 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{VIRDYD2XO4UY5JC3XPL4E2UWX2}

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	2026-05-18T00:28:00.956607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa223c0f5777298ea45bbbd7c26a96be9e0305f02ecb80650e8475e7bc29e564

Aliases

arxiv: 1712.05115 · arxiv_version: 1712.05115v1 · doi: 10.48550/arxiv.1712.05115 · pith_short_12: VIRDYD2XO4UY · pith_short_16: VIRDYD2XO4UY5JC3 · pith_short_8: VIRDYD2X

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/VIRDYD2XO4UY5JC3XPL4E2UWX2 \
  | 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: aa223c0f5777298ea45bbbd7c26a96be9e0305f02ecb80650e8475e7bc29e564

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1992225c66dd1a33ef638b69a5780a5fbbd96336e2d35d51b619ee4293f57d96",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-12-14T07:44:21Z",
    "title_canon_sha256": "366bbfd462306188318560227e49ce4d1861cdb417a9a9b666c102d4effaeaca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05115",
    "kind": "arxiv",
    "version": 1
  }
}