Pith Number

pith:RHBFJVKT

pith:2015:RHBFJVKTTNLG7HKF6ILDIC2WD3

not attested not anchored not stored refs pending

Variations on a theme of Kasteleyn, with application to the totally nonnegative Grassmannian

David E. Speyer

arxiv:1510.03501 v1 · 2015-10-13 · 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{RHBFJVKTTNLG7HKF6ILDIC2WD3}

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.

Cited by

1 paper in Pith

Vector-relation configurations and plabic graphs

Receipt and verification

First computed	2026-05-18T01:30:17.027438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89c254d5539b566f9d45f216340b561efdc7280eaf59aa9f33e8ec0d2acbea9e

Aliases

arxiv: 1510.03501 · arxiv_version: 1510.03501v1 · doi: 10.48550/arxiv.1510.03501 · pith_short_12: RHBFJVKTTNLG · pith_short_16: RHBFJVKTTNLG7HKF · pith_short_8: RHBFJVKT

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/RHBFJVKTTNLG7HKF6ILDIC2WD3 \
  | 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: 89c254d5539b566f9d45f216340b561efdc7280eaf59aa9f33e8ec0d2acbea9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c87e7da2d1681a4ea9e979975e9f3baa80d118b620c13c72917bae520e256b25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-10-13T01:11:06Z",
    "title_canon_sha256": "c35ecf8e12b6215f905cc1f0af2dda816301bbb4c1d5c6fb3045c433abd522bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.03501",
    "kind": "arxiv",
    "version": 1
  }
}