Pith Number

pith:NDUISKF3

pith:2015:NDUISKF3PXZIV2SKISRADVEBIS

not attested not anchored not stored refs pending

Isometries of Grassmann spaces

Gy\"orgy P\'al Geh\'er, Peter \v{S}emrl

arxiv:1507.00048 v2 · 2015-06-30 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NDUISKF3PXZIV2SKISRADVEBIS}

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	2026-05-18T01:17:52.765072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68e88928bb7df28aea4a44a201d48144adc202184e7b5d8a5a793d51644eb6d3

Aliases

arxiv: 1507.00048 · arxiv_version: 1507.00048v2 · doi: 10.48550/arxiv.1507.00048 · pith_short_12: NDUISKF3PXZI · pith_short_16: NDUISKF3PXZIV2SK · pith_short_8: NDUISKF3

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/NDUISKF3PXZIV2SKISRADVEBIS \
  | 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: 68e88928bb7df28aea4a44a201d48144adc202184e7b5d8a5a793d51644eb6d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41c2765c891dd9743bb71bb92e5afdc495aaabef9d291e4e28aa6a324fdb8475",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2015-06-30T21:52:14Z",
    "title_canon_sha256": "f319a9d9660047b8f94f6b9cff2b233035bb7fde6d6b9996735736a49cfe49a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00048",
    "kind": "arxiv",
    "version": 2
  }
}