Pith Number

pith:UQ4FLAAX

pith:2010:UQ4FLAAXQ7IJ6O3PQWGXRSTMFH

not attested not anchored not stored refs pending

Canonical surfaces associated with projectors in grassmannian sigma models

I. Yurducsen, V. Hussin, W. J. Zakrzewski

arxiv:1002.2690 v1 · 2010-02-15 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQ4FLAAXQ7IJ6O3PQWGXRSTMFH}

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	2026-05-18T02:09:08.581958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a43855801787d09f3b6f858d78ca6c29f14b40586f96cad9aed8db7e68b124f4

Aliases

arxiv: 1002.2690 · arxiv_version: 1002.2690v1 · doi: 10.48550/arxiv.1002.2690 · pith_short_12: UQ4FLAAXQ7IJ · pith_short_16: UQ4FLAAXQ7IJ6O3P · pith_short_8: UQ4FLAAX

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/UQ4FLAAXQ7IJ6O3PQWGXRSTMFH \
  | 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: a43855801787d09f3b6f858d78ca6c29f14b40586f96cad9aed8db7e68b124f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bca9eeaaa8cfc3bb9a6ddbf94ebf1042d93cbe80a387ccbb88daa3ce03acad8d",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2010-02-15T14:52:23Z",
    "title_canon_sha256": "74c6fc6e8c00548ee2ce68b47c82a5d94aec399c3010ccdd9084905079b2cbb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.2690",
    "kind": "arxiv",
    "version": 1
  }
}