Pith Number

pith:NFTDHC3T

pith:2018:NFTDHC3TB7CYLYMOHKLAWODUT3

not attested not anchored not stored refs pending

Positive Grassmannian and polyhedral subdivisions

Alexander Postnikov

arxiv:1806.05307 v1 · 2018-06-14 · 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{NFTDHC3TB7CYLYMOHKLAWODUT3}

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	2026-05-18T00:13:16.429768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6966338b730fc585e18e3a960b38749ee9ac230e5c250cfc64340987e132ad2c

Aliases

arxiv: 1806.05307 · arxiv_version: 1806.05307v1 · doi: 10.48550/arxiv.1806.05307 · pith_short_12: NFTDHC3TB7CY · pith_short_16: NFTDHC3TB7CYLYMO · pith_short_8: NFTDHC3T

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/NFTDHC3TB7CYLYMOHKLAWODUT3 \
  | 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: 6966338b730fc585e18e3a960b38749ee9ac230e5c250cfc64340987e132ad2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87e002678b57fb870500c8decb9bce81cd48e860dfe1934a5b231e62aeeb20ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-06-14T00:11:16Z",
    "title_canon_sha256": "807319b71add10e2f178a6e8fc4a6aec4bd9a352a48aab867189b19b6359bcf4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.05307",
    "kind": "arxiv",
    "version": 1
  }
}