Pith Number

pith:3FWYNOSS

pith:2005:3FWYNOSSE7SLUSLERLTNMEUF52

not attested not anchored not stored refs pending

On the nonexistence of certain morphisms from Grassmannian to Grassmannian in characteristic 0

Ajay C. Ramadoss

arxiv:math/0501130 v3 · 2005-01-10 · math.AG · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FWYNOSSE7SLUSLERLTNMEUF52}

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	2026-07-04T14:59:05.189675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d96d86ba5227e4ba49648ae6d61285eebb3849b36f7d50ebbdf68f1f4a018323

Aliases

arxiv: math/0501130 · arxiv_version: math/0501130v3 · doi: 10.48550/arxiv.math/0501130 · pith_short_12: 3FWYNOSSE7SL · pith_short_16: 3FWYNOSSE7SLUSLE · pith_short_8: 3FWYNOSS

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/3FWYNOSSE7SLUSLERLTNMEUF52 \
  | 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: d96d86ba5227e4ba49648ae6d61285eebb3849b36f7d50ebbdf68f1f4a018323

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7cbdc6e6d48e4fb1e9992230a9ec58ffca8f7d8cf3734bd8797bf575947e043",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2005-01-10T04:23:43Z",
    "title_canon_sha256": "faaa2fa3b591e9be72247f4d91a9bd558ff234c740d3df9a9911533d589804bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0501130",
    "kind": "arxiv",
    "version": 3
  }
}