Pith Number

pith:PXD4K2E2

pith:2019:PXD4K2E2H7IQLNWQ5F7QACKIAB

not attested not anchored not stored refs pending

CL-Shellable Posets with No EL-Shellings

Tiansi Li

arxiv:1907.06833 v1 · 2019-07-16 · 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{PXD4K2E2H7IQLNWQ5F7QACKIAB}

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	2026-05-17T23:40:29.019124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dc7c5689a3fd105b6d0e97f00094800500c5ae8d400a5ff91ce3d062e7ab1d4

Aliases

arxiv: 1907.06833 · arxiv_version: 1907.06833v1 · doi: 10.48550/arxiv.1907.06833 · pith_short_12: PXD4K2E2H7IQ · pith_short_16: PXD4K2E2H7IQLNWQ · pith_short_8: PXD4K2E2

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/PXD4K2E2H7IQLNWQ5F7QACKIAB \
  | 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: 7dc7c5689a3fd105b6d0e97f00094800500c5ae8d400a5ff91ce3d062e7ab1d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d899f0a30258ee9ee43be09b2a02f9566b36216ecd59d708158ea521da74ab3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-07-16T04:40:04Z",
    "title_canon_sha256": "81cee0f097c73dc6db021974fc72e5b52a2f83f4d892d3624d1d803dc1248102"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06833",
    "kind": "arxiv",
    "version": 1
  }
}