Pith Number

pith:YXROFSZV

pith:2021:YXROFSZVBKUWDUVRC4TGGWVQNI

not attested not anchored not stored refs pending

Tautological classes of matroids

Andrew Berget, Christopher Eur, Dennis Tseng, Hunter Spink

arxiv:2103.08021 v4 · 2021-03-14 · math.CO · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YXROFSZVBKUWDUVRC4TGGWVQNI}

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

The integral Chow ring of $\mathscr{M}_{0}(\mathbb{P}^r, 2)$

Receipt and verification

First computed	2026-07-05T06:00:54.311930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5e2e2cb350aa961d2b11726635ab06a2ce1cb053fe70c2c4d835035a1bd1c38

Aliases

arxiv: 2103.08021 · arxiv_version: 2103.08021v4 · doi: 10.48550/arxiv.2103.08021 · pith_short_12: YXROFSZVBKUW · pith_short_16: YXROFSZVBKUWDUVR · pith_short_8: YXROFSZV

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/YXROFSZVBKUWDUVRC4TGGWVQNI \
  | 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: c5e2e2cb350aa961d2b11726635ab06a2ce1cb053fe70c2c4d835035a1bd1c38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60f2c2841c0e4119bc13619a2d60d262f0af89ea5e63a6cb78d958e4208f40b7",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-03-14T20:10:26Z",
    "title_canon_sha256": "994eaee5b74bc93846a7544e0b9e45acaa0db88c43f0a105515cfcd1f378e965"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.08021",
    "kind": "arxiv",
    "version": 4
  }
}