Pith Number

pith:XURWECXY

pith:2018:XURWECXYOXNTSG5ZFS5O2WTGYY

not attested not anchored not stored refs pending

Total positivity of a class of combinatorial matrices

Ken Joffaniel M. Gonzales

arxiv:1808.09768 v4 · 2018-08-29 · 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{XURWECXYOXNTSG5ZFS5O2WTGYY}

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	2026-05-18T00:06:00.936112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd23620af875db391bb92cbaed5a66c63c92bbaf2195516cc6901d39b4e4a517

Aliases

arxiv: 1808.09768 · arxiv_version: 1808.09768v4 · doi: 10.48550/arxiv.1808.09768 · pith_short_12: XURWECXYOXNT · pith_short_16: XURWECXYOXNTSG5Z · pith_short_8: XURWECXY

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/XURWECXYOXNTSG5ZFS5O2WTGYY \
  | 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: bd23620af875db391bb92cbaed5a66c63c92bbaf2195516cc6901d39b4e4a517

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0553f1335085866c930a47e4f2cad3425673134452535e8cd9f87a9bdb63f2e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-29T12:50:11Z",
    "title_canon_sha256": "4ab8b5eff084bffefa6268bcbe47673fcd9478dccbf7f94d423462ed49bff39c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09768",
    "kind": "arxiv",
    "version": 4
  }
}