Pith Number

pith:NG6B3SIH

pith:2010:NG6B3SIHP6U2K4H65X36D3SJ6C

not attested not anchored not stored refs pending

Counting subspaces of a finite vector space

Amritanshu Prasad

arxiv:1006.2193 v2 · 2010-06-11 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NG6B3SIHP6U2K4H65X36D3SJ6C}

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	2026-05-18T04:30:26.252933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69bc1dc9077fa9a570feedf7e1ee49f0a8787dd1f721d97cc5c9ff9b6a6bd52d

Aliases

arxiv: 1006.2193 · arxiv_version: 1006.2193v2 · doi: 10.48550/arxiv.1006.2193 · pith_short_12: NG6B3SIHP6U2 · pith_short_16: NG6B3SIHP6U2K4H6 · pith_short_8: NG6B3SIH

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/NG6B3SIHP6U2K4H65X36D3SJ6C \
  | 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: 69bc1dc9077fa9a570feedf7e1ee49f0a8787dd1f721d97cc5c9ff9b6a6bd52d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "736fba57e3e3d45c5030379ea18b2c720ae2f158f9d6f3cb9565d85117ee6a0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-06-11T03:59:24Z",
    "title_canon_sha256": "b48ad2210ab64b29f21af7cdbb9554b629ba19ab89191e282835021fcd89dead"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.2193",
    "kind": "arxiv",
    "version": 2
  }
}