Pith Number

pith:EOTW6VFI

pith:2019:EOTW6VFIIKVZRIQ6YM76CFV2Q2

not attested not anchored not stored refs pending

Ruled surfaces of finite type with respect to the second fundamental form

Amer Dababneh, Hassan Al-Zoubi, Nancy Ramahi, Waseem Mashaleh

arxiv:1902.08248 v1 · 2019-02-20 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EOTW6VFIIKVZRIQ6YM76CFV2Q2}

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	2026-05-17T23:52:57.886762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23a76f54a842ab98a21ec33fe116ba86a9c6e5cac1420b02c5502e6d9562a661

Aliases

arxiv: 1902.08248 · arxiv_version: 1902.08248v1 · doi: 10.48550/arxiv.1902.08248 · pith_short_12: EOTW6VFIIKVZ · pith_short_16: EOTW6VFIIKVZRIQ6 · pith_short_8: EOTW6VFI

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/EOTW6VFIIKVZRIQ6YM76CFV2Q2 \
  | 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: 23a76f54a842ab98a21ec33fe116ba86a9c6e5cac1420b02c5502e6d9562a661

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5549c92083cf9ae2d8b968dff20c9f80e4398bbc1804ee805ca66e8ae2f722bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2019-02-20T11:57:43Z",
    "title_canon_sha256": "bd599a3b6b8fde557217f494379947d482296db8ddeb5a40cf7e128a6791cfb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08248",
    "kind": "arxiv",
    "version": 1
  }
}