Pith Number

pith:UYLIXDSB

pith:2019:UYLIXDSBHYEY2U3TXDUYJAJL5K

not attested not anchored not stored refs pending

Choice functions in the intersection of matroids

Joseph Briggs, Minki Kim

arxiv:1905.00043 v2 · 2019-04-30 · 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{UYLIXDSBHYEY2U3TXDUYJAJL5K}

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	2026-05-17T23:41:36.331636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6168b8e413e098d5373b8e984812bea9af8e54f97646c85327b46252711eeef

Aliases

arxiv: 1905.00043 · arxiv_version: 1905.00043v2 · doi: 10.48550/arxiv.1905.00043 · pith_short_12: UYLIXDSBHYEY · pith_short_16: UYLIXDSBHYEY2U3T · pith_short_8: UYLIXDSB

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/UYLIXDSBHYEY2U3TXDUYJAJL5K \
  | 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: a6168b8e413e098d5373b8e984812bea9af8e54f97646c85327b46252711eeef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6fe150d8c46f7c8aa8ef192e05a633b1d046b8ef58de6c09ef114d3c3961efc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-04-30T18:03:02Z",
    "title_canon_sha256": "f9887b72dd52e6fbc28df26efe55415e3567b6ddc38977c78f58855f74888711"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.00043",
    "kind": "arxiv",
    "version": 2
  }
}