Pith Number

pith:3UPCBV7O

pith:2015:3UPCBV7O3HMFGBJEAWG2F26IRK

not attested not anchored not stored refs pending

Parametric Regression on the Grassmannian

Marc Niethammer, Nikhil Singh, Nuno Vasconcelos, Roland Kwitt, Yi Hong

arxiv:1505.03832 v1 · 2015-05-14 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UPCBV7O3HMFGBJEAWG2F26IRK}

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	2026-05-18T02:09:52.900165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1e20d7eed9d8530524058da2ebc88a8a0d373175d97fd23af5d56c51aad578

Aliases

arxiv: 1505.03832 · arxiv_version: 1505.03832v1 · doi: 10.48550/arxiv.1505.03832 · pith_short_12: 3UPCBV7O3HMF · pith_short_16: 3UPCBV7O3HMFGBJE · pith_short_8: 3UPCBV7O

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/3UPCBV7O3HMFGBJEAWG2F26IRK \
  | 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: dd1e20d7eed9d8530524058da2ebc88a8a0d373175d97fd23af5d56c51aad578

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ecf9bc09b6086799a2a29d495d94f5c648a87f1be3521f70bc4d692660b8657",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-05-14T18:48:08Z",
    "title_canon_sha256": "b42e63899909bf7b6a3eebc82c82535c8e706ea4938af2e2e139b7a23ed969ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03832",
    "kind": "arxiv",
    "version": 1
  }
}