Pith Number

pith:B7MDAO7M

pith:2021:B7MDAO7ME2I76PVBEJ5OVUQF34

not attested not anchored not stored refs pending

Energy-adaptive Riemannian optimization on the Stiefel manifold

Daniel Peterseim, Robert Altmann, Tatjana Stykel

arxiv:2108.09831 v2 · 2021-08-22 · 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{B7MDAO7ME2I76PVBEJ5OVUQF34}

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.

Cited by

1 paper in Pith

chebgreen: Learning and Interpolating Continuous Empirical Green's Functions from Data

Receipt and verification

First computed	2026-07-05T04:15:10.177257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fd8303bec2691ff3ea1227aead205df2db2d74c2a08fbdb8e0acf64237d6cc9

Aliases

arxiv: 2108.09831 · arxiv_version: 2108.09831v2 · doi: 10.48550/arxiv.2108.09831 · pith_short_12: B7MDAO7ME2I7 · pith_short_16: B7MDAO7ME2I76PVB · pith_short_8: B7MDAO7M

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/B7MDAO7ME2I76PVBEJ5OVUQF34 \
  | 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: 0fd8303bec2691ff3ea1227aead205df2db2d74c2a08fbdb8e0acf64237d6cc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4496f49a744b7a1540c1f906f20124a7460227ecec84235d6bbb18dc1659e00",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-08-22T20:35:26Z",
    "title_canon_sha256": "566bd42b085dcbfa23d61472ae31f1477bcfaa0f77b70d3165f526d7192690da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.09831",
    "kind": "arxiv",
    "version": 2
  }
}