Pith Number

pith:3W7QHLTW

pith:2015:3W7QHLTW7DPCGUALNFSJ6X6DM3

not attested not anchored not stored refs pending

Geometry of Curves in $\mathbb R^n$, Singular Value Decomposition, and Hankel Determinants

Bruce Draper, Chris Peterson, Michael Kirby, Robert Arn, Xavier \'Alvarez-Vizoso

arxiv:1511.05008 v2 · 2015-11-16 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3W7QHLTW7DPCGUALNFSJ6X6DM3}

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	2026-05-18T00:32:26.215469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddbf03ae76f8de23500b69649f5fc366f87a1afba6e79c199ce1f19480c98ab6

Aliases

arxiv: 1511.05008 · arxiv_version: 1511.05008v2 · doi: 10.48550/arxiv.1511.05008 · pith_short_12: 3W7QHLTW7DPC · pith_short_16: 3W7QHLTW7DPCGUAL · pith_short_8: 3W7QHLTW

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/3W7QHLTW7DPCGUALNFSJ6X6DM3 \
  | 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: ddbf03ae76f8de23500b69649f5fc366f87a1afba6e79c199ce1f19480c98ab6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59681d0950ce848d679c5d843a862fa6ba6306cd6c18569c1cc1d3f7eb5216a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-11-16T15:58:05Z",
    "title_canon_sha256": "a37db42280ac59569bf0bb02ff5b1c037410a1547d9a0b5273c405fd7e965db8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05008",
    "kind": "arxiv",
    "version": 2
  }
}