Pith Number

pith:FKBHRTAI

pith:2018:FKBHRTAIJRH6QS5VD35E4MOJTY

not attested not anchored not stored refs pending

Isospectral domains for discrete elliptic operators

Daniele Funaro, Lorella Fatone

arxiv:1803.11108 v1 · 2018-03-29 · 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{FKBHRTAIJRH6QS5VD35E4MOJTY}

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	2026-05-18T00:19:48.508376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a8278cc084c4fe84bb51efa4e31c99e0f55214146404ae517a511d3a002b4b1

Aliases

arxiv: 1803.11108 · arxiv_version: 1803.11108v1 · doi: 10.48550/arxiv.1803.11108 · pith_short_12: FKBHRTAIJRH6 · pith_short_16: FKBHRTAIJRH6QS5V · pith_short_8: FKBHRTAI

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/FKBHRTAIJRH6QS5VD35E4MOJTY \
  | 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: 2a8278cc084c4fe84bb51efa4e31c99e0f55214146404ae517a511d3a002b4b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28672885adfcfcc1ad80133f75c2e2b6606df5ff7a94ec113469a6c2033cf413",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-03-29T14:59:09Z",
    "title_canon_sha256": "399c423d18f324899e770310572d52f34d54572cb4b05b373c838da119164863"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.11108",
    "kind": "arxiv",
    "version": 1
  }
}