Pith Number

pith:RY6O7TI7

pith:2025:RY6O7TI7CTQVCB3UD3C224T5HP

not attested not anchored not stored refs pending

An Algorithmic Upper Bound for Permanents via a Permanental Schur Inequality

Aditi Laddha, Madhusudhan Reddy Pittu

arxiv:2509.08121 v1 · 2025-09-09 · cs.DM · 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{RY6O7TI7CTQVCB3UD3C224T5HP}

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	2026-07-05T12:08:22.770242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e3cefcd1f14e15107741ec5ad727d3be49e793654871f08f22a5e29571c56b9

Aliases

arxiv: 2509.08121 · arxiv_version: 2509.08121v1 · doi: 10.48550/arxiv.2509.08121 · pith_short_12: RY6O7TI7CTQV · pith_short_16: RY6O7TI7CTQVCB3U · pith_short_8: RY6O7TI7

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/RY6O7TI7CTQVCB3UD3C224T5HP \
  | 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: 8e3cefcd1f14e15107741ec5ad727d3be49e793654871f08f22a5e29571c56b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c9e6b03292ceba4a8061358f572e6a2e43b86585c7871ee3210f78d834aae88",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2025-09-09T19:59:21Z",
    "title_canon_sha256": "21c8271e1adfdca4cfa5a0ecfc0d7ddb022909d82a4c2b69aff7ef9d051f3e5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.08121",
    "kind": "arxiv",
    "version": 1
  }
}