Pith Number

pith:PCPLYBKV

pith:2014:PCPLYBKV4XCXME73XOP76F7MPC

not attested not anchored not stored refs pending

Adaptive Leja sparse grid constructions for stochastic collocation and high-dimensional approximation

Akil Narayan, John Jakeman

arxiv:1404.5663 v2 · 2014-04-22 · math.NA · cs.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{PCPLYBKV4XCXME73XOP76F7MPC}

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	2026-06-04T16:08:32.244985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

789ebc0555e5c57613fbbb9fff17ec78a8429d41f7b37773eac1964be49a870c

Aliases

arxiv: 1404.5663 · arxiv_version: 1404.5663v2 · doi: 10.48550/arxiv.1404.5663 · pith_short_12: PCPLYBKV4XCX · pith_short_16: PCPLYBKV4XCXME73 · pith_short_8: PCPLYBKV

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/PCPLYBKV4XCXME73XOP76F7MPC \
  | 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: 789ebc0555e5c57613fbbb9fff17ec78a8429d41f7b37773eac1964be49a870c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9033ab3174bda92dda577b602a30c6d9a9d57ca91f302d4b819a262b712831c",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-04-22T22:03:26Z",
    "title_canon_sha256": "ef7993876889b5ff6241b61352b61b84d8d5aef8eb70a60c2a1f6a13ae153353"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.5663",
    "kind": "arxiv",
    "version": 2
  }
}