Pith Number

pith:YHHSZH7N

pith:2017:YHHSZH7NWXBRK5P3WX5N7IOMIX

not attested not anchored not stored refs pending

Tractability of $\mathbb{L}_2$-approximation in hybrid function spaces

Friedrich Pillichshammer, Helene Laimer, Peter Kritzer

arxiv:1701.02910 v1 · 2017-01-11 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YHHSZH7NWXBRK5P3WX5N7IOMIX}

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	2026-05-18T00:52:59.841270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1cf2c9fedb5c31575fbb5fadfa1cc45f9e8e434a99d13bcef8efe64bef58d77

Aliases

arxiv: 1701.02910 · arxiv_version: 1701.02910v1 · doi: 10.48550/arxiv.1701.02910 · pith_short_12: YHHSZH7NWXBR · pith_short_16: YHHSZH7NWXBRK5P3 · pith_short_8: YHHSZH7N

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/YHHSZH7NWXBRK5P3WX5N7IOMIX \
  | 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: c1cf2c9fedb5c31575fbb5fadfa1cc45f9e8e434a99d13bcef8efe64bef58d77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e8a6b0564be82dcd01797ee557d728650da1143c23f25ff9a22067fcdfaaee3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-01-11T10:06:28Z",
    "title_canon_sha256": "9111654a87287b07bdbc7bf687f82930c1aa1499fe533289375f7d6003893635"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02910",
    "kind": "arxiv",
    "version": 1
  }
}