Pith Number

pith:W6ZM34J7

pith:2026:W6ZM34J75ZADMGQTBCV4YMFWWG

not attested not anchored not stored refs pending

Copositive and completely positive cones over symmetric cones of rank at least 5

Mitsuhiro Nishijima

arxiv:2602.23725 v2 · 2026-02-27 · math.OC · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W6ZM34J75ZADMGQTBCV4YMFWWG}

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	2026-06-12T01:08:23.246446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7b2cdf13fee40361a1308abcc30b6b1a9797d6faf1a0113abc3c6fd745ab3ba

Aliases

arxiv: 2602.23725 · arxiv_version: 2602.23725v2 · doi: 10.48550/arxiv.2602.23725 · pith_short_12: W6ZM34J75ZAD · pith_short_16: W6ZM34J75ZADMGQT · pith_short_8: W6ZM34J7

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/W6ZM34J75ZADMGQTBCV4YMFWWG \
  | 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: b7b2cdf13fee40361a1308abcc30b6b1a9797d6faf1a0113abc3c6fd745ab3ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd93446f1ce589ce86781b0473f13bc7effac1a07273d506516eaa8cda32ee07",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-02-27T06:49:02Z",
    "title_canon_sha256": "1e06d82def8d6b74e58d8c6bd6ba20cf649cfcc633c1f2a70191e8d9c28ec50c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.23725",
    "kind": "arxiv",
    "version": 2
  }
}