Pith Number

pith:YIRI7TJN

pith:2015:YIRI7TJNO2OCMSEIK4EQGOJE7D

not attested not anchored not stored refs pending

Day's fixed point theorem, Group cohomology and Quasi-isometric rigidity

Tullia Dymarz, Xiangdong Xie

arxiv:1502.00710 v1 · 2015-02-03 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YIRI7TJNO2OCMSEIK4EQGOJE7D}

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	2026-05-18T02:28:04.546440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2228fcd2d769c2648885709033924f8e713830fb10e52772d59f8ef04d08a3c

Aliases

arxiv: 1502.00710 · arxiv_version: 1502.00710v1 · doi: 10.48550/arxiv.1502.00710 · pith_short_12: YIRI7TJNO2OC · pith_short_16: YIRI7TJNO2OCMSEI · pith_short_8: YIRI7TJN

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/YIRI7TJNO2OCMSEIK4EQGOJE7D \
  | 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: c2228fcd2d769c2648885709033924f8e713830fb10e52772d59f8ef04d08a3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb38174a276a53f1daa2c74e31f62ea6b29e240a270455d9fc5111707072dfd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-02-03T02:24:12Z",
    "title_canon_sha256": "88b403579ad8d2c1dc03b11d31ddccd6f91c436787993c9ac5ece000eaa8475d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00710",
    "kind": "arxiv",
    "version": 1
  }
}