Pith Number

pith:QO2BFWYX

pith:2017:QO2BFWYX3SSW7VFLINCNAQWEBZ

not attested not anchored not stored refs pending

Backward Shift Invariant Subspaces in Reproducing Kernel Hilbert Spaces

Emmanuel Fricain, Javad Mashreghi, Rishika Rupam

arxiv:1709.09396 v2 · 2017-09-27 · 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{QO2BFWYX3SSW7VFLINCNAQWEBZ}

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	2026-05-17T23:49:22.712458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83b412db17dca56fd4ab4344d042c40e5018dbbc796dbbacf78a15431bbc2dca

Aliases

arxiv: 1709.09396 · arxiv_version: 1709.09396v2 · doi: 10.48550/arxiv.1709.09396 · pith_short_12: QO2BFWYX3SSW · pith_short_16: QO2BFWYX3SSW7VFL · pith_short_8: QO2BFWYX

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/QO2BFWYX3SSW7VFLINCNAQWEBZ \
  | 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: 83b412db17dca56fd4ab4344d042c40e5018dbbc796dbbacf78a15431bbc2dca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0d2b2e41170e39fcb4f9c94520c6889f10ce689a286de2e5257d3c0bffc9f68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-09-27T09:08:54Z",
    "title_canon_sha256": "c53e546d43f722b694557183012eeb4fb6b07c3eea09c74f4d450c93e2772884"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09396",
    "kind": "arxiv",
    "version": 2
  }
}