Pith Number

pith:MVBSKW4W

pith:2025:MVBSKW4WPDUDUPZD7VRZADKMXX

not attested not anchored not stored refs pending

Global positroid varieties

Evgeny Feigin

arxiv:2509.07476 v1 · 2025-09-09 · math.AG · math.CO · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MVBSKW4WPDUDUPZD7VRZADKMXX}

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	2026-07-05T12:07:22.079758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6543255b9678e83a3f23fd63900d4cbdd6ffdc7d83c56deef184369aabb591ec

Aliases

arxiv: 2509.07476 · arxiv_version: 2509.07476v1 · doi: 10.48550/arxiv.2509.07476 · pith_short_12: MVBSKW4WPDUD · pith_short_16: MVBSKW4WPDUDUPZD · pith_short_8: MVBSKW4W

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/MVBSKW4WPDUDUPZD7VRZADKMXX \
  | 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: 6543255b9678e83a3f23fd63900d4cbdd6ffdc7d83c56deef184369aabb591ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8db96d810113bdbeaca57f3196bbe4913d9de2c517a80b47202f501e107976f",
    "cross_cats_sorted": [
      "math.CO",
      "math.RT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-09-09T08:00:17Z",
    "title_canon_sha256": "ecee1d6541bf23b0ee42410f7b6396d3df2b8e04a88b7679b588c6c7034619ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.07476",
    "kind": "arxiv",
    "version": 1
  }
}