Pith Number

pith:6YIBPUEF

pith:1999:6YIBPUEF5OAW3MFM45TB5MJANP

not attested not anchored not stored refs pending

Bondi-type systems near space-like infinity and the calculation of the NP-constants

H. Friedrich, J. Kannar

arxiv:gr-qc/9910077 v1 · 1999-10-22 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6YIBPUEF5OAW3MFM45TB5MJANP}

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

Ti and Spi, Carrollian extended boundaries at timelike and spatial infinity

Receipt and verification

First computed	2026-07-04T16:13:55.121906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f61017d085eb816db0ace7661eb1206bfb7c15991b37b1c038cdbdedd32d7149

Aliases

arxiv: gr-qc/9910077 · arxiv_version: gr-qc/9910077v1 · doi: 10.48550/arxiv.gr-qc/9910077 · pith_short_12: 6YIBPUEF5OAW · pith_short_16: 6YIBPUEF5OAW3MFM · pith_short_8: 6YIBPUEF

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/6YIBPUEF5OAW3MFM45TB5MJANP \
  | 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: f61017d085eb816db0ace7661eb1206bfb7c15991b37b1c038cdbdedd32d7149

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c186d6b2a0f0d6ea51805ff9612dce1138c7fb3b346717cc90fb26f917c4bfb4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-10-22T12:55:48Z",
    "title_canon_sha256": "65d0e86d1ecb8c0ed27090adb9953a9de58569ef64aa7ba29fafdb5e9d49c832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9910077",
    "kind": "arxiv",
    "version": 1
  }
}