Pith Number

pith:UABVY52F

pith:2017:UABVY52FUVRFXDY752NAN52N3U

not attested not anchored not stored refs pending

Approximation of the Inverse Frame Operator and Stability of Hilbert$-$Schmidt Frames

Anirudha Poria

arxiv:1704.02541 v2 · 2017-04-08 · 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{UABVY52FUVRFXDY752NAN52N3U}

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	2026-05-18T00:41:49.185948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0035c7745a5625b8f1fee9a06f74ddd1c69aae2bfa586580901d8f6e728d8fa

Aliases

arxiv: 1704.02541 · arxiv_version: 1704.02541v2 · doi: 10.48550/arxiv.1704.02541 · pith_short_12: UABVY52FUVRF · pith_short_16: UABVY52FUVRFXDY7 · pith_short_8: UABVY52F

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/UABVY52FUVRFXDY752NAN52N3U \
  | 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: a0035c7745a5625b8f1fee9a06f74ddd1c69aae2bfa586580901d8f6e728d8fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3edf176a92623388d01863f68aedee2a43ccdd5578124c21f9abdc808527fce3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-04-08T23:02:07Z",
    "title_canon_sha256": "45841222e2057842e0a0b28645cc71d43d25a87cfaeeac09eb93565e31727f5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02541",
    "kind": "arxiv",
    "version": 2
  }
}