Pith Number

pith:VR7Z7JUN

pith:2026:VR7Z7JUNZRWMXFL4NRMTW5KSMY

not attested not anchored not stored refs pending

Forbidden Intersection Theorems for Matrix Spaces

Esty Kelman, Nathan Lindzey, Ohad Sheinfeld

arxiv:2606.12380 v1 · 2026-06-10 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VR7Z7JUNZRWMXFL4NRMTW5KSMY}

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	2026-06-11T02:09:49.180488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac7f9fa68dcc6ccb957c6c593b75526609e8b6580256800e80f4bbb01abede93

Aliases

arxiv: 2606.12380 · arxiv_version: 2606.12380v1 · doi: 10.48550/arxiv.2606.12380 · pith_short_12: VR7Z7JUNZRWM · pith_short_16: VR7Z7JUNZRWMXFL4 · pith_short_8: VR7Z7JUN

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/VR7Z7JUNZRWMXFL4NRMTW5KSMY \
  | 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: ac7f9fa68dcc6ccb957c6c593b75526609e8b6580256800e80f4bbb01abede93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ad908eba97dbbe65bb1cbda081a781846ff0270412d082e34f477a518b5338d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2026-06-10T17:43:13Z",
    "title_canon_sha256": "150f32981190a16ca54f2a7a4a6e89cce0e2bff02d122295452910cbd85fbfb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12380",
    "kind": "arxiv",
    "version": 1
  }
}