Pith Number

pith:TWPEYDNA

pith:2019:TWPEYDNAR7RSY5AMG6C7BPJWMB

not attested not anchored not stored refs pending

Linear degenerations of flag varieties: partial flags, defining equations, and group actions

Evgeny Feigin, Ghislain Fourier, Giovanni Cerulli Irelli, Markus Reineke, Xin Fang

arxiv:1901.11020 v1 · 2019-01-30 · math.AG · math.CO · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TWPEYDNAR7RSY5AMG6C7BPJWMB}

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	2026-05-17T23:55:02.802296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d9e4c0da08fe32c740c3785f0bd3660708e2d78998132cbd123afddca35deb2

Aliases

arxiv: 1901.11020 · arxiv_version: 1901.11020v1 · doi: 10.48550/arxiv.1901.11020 · pith_short_12: TWPEYDNAR7RS · pith_short_16: TWPEYDNAR7RSY5AM · pith_short_8: TWPEYDNA

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/TWPEYDNAR7RSY5AMG6C7BPJWMB \
  | 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: 9d9e4c0da08fe32c740c3785f0bd3660708e2d78998132cbd123afddca35deb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4df14099b0e6a6f0242ab782e04164eeb66aeccc88bc9441ea26e4bf6ed0dc2d",
    "cross_cats_sorted": [
      "math.CO",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-01-30T13:44:53Z",
    "title_canon_sha256": "d6269c6735282260aad14d3760c2f8f0a26fd9c84a54c57d47a888201074c2b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.11020",
    "kind": "arxiv",
    "version": 1
  }
}