Pith Number

pith:LQFZYZ2N

pith:2021:LQFZYZ2NJN2FCPGLQ54AO5FRTN

not attested not anchored not stored refs pending

Effective maximum principles for spectral methods

Dong Li

arxiv:2107.09438 v1 · 2021-07-20 · math.NA · cs.NA · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LQFZYZ2NJN2FCPGLQ54AO5FRTN}

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	2026-07-05T02:59:30.788236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c0b9c674d4b74513ccb87780774b19b672289d153cbcbb8ed23ab73853e483e

Aliases

arxiv: 2107.09438 · arxiv_version: 2107.09438v1 · doi: 10.48550/arxiv.2107.09438 · pith_short_12: LQFZYZ2NJN2F · pith_short_16: LQFZYZ2NJN2FCPGL · pith_short_8: LQFZYZ2N

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/LQFZYZ2NJN2FCPGLQ54AO5FRTN \
  | 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: 5c0b9c674d4b74513ccb87780774b19b672289d153cbcbb8ed23ab73853e483e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17dd5eee01e760f4d71e036b98ac234148f7c765fe53170cbf15db7ed8ba38b5",
    "cross_cats_sorted": [
      "cs.NA",
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-07-20T12:18:39Z",
    "title_canon_sha256": "3ad04464167734c111455d6a983b18c47e364c3d2dbf8f206d3d57cd16cde90c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.09438",
    "kind": "arxiv",
    "version": 1
  }
}